The Cheapest Medicine Basket, Not the Cheapest Medicine — How to Save

You found the same medicine £1 cheaper at another pharmacy — and ended up paying more overall. Sounds absurd, doesn't it? Yet it is one of the most common traps when buying medicines online. The problem is that we compare the prices of individual products, but we pay for the whole order including delivery. And that is exactly why the cheapest medicine basket is something completely different from the cheapest medicine.

In this guide I will show you exactly where your savings disappear, how free-delivery thresholds work, and how, in three steps, to compare the total cost of buying medicines instead of chasing the lowest price on a single item. No theory — just worked examples with the numbers laid out.

Why the cheapest medicine ≠ the cheapest shop

The cheapest medicine almost never means the cheapest shop, because the final amount is decided by the sum of three things: the prices of every product, the number of parcels, and the cost of delivery. A pharmacy with a record-low price on one medicine is often dearer on the rest of your list — and if you split your order across several pharmacies, you add a separate delivery charge to each one.

In other words: buying "each item wherever it is cheapest" is optimising the wrong number. Only one result matters — how much you pay in total for the whole medicine cabinet once the parcel, or parcels, arrive at your door. That is the total cost of buying medicines, and it is the only figure that matters for your wallet.

Where do these price differences between pharmacies come from in the first place? That is a subject for a separate article — we explain the mechanics of margins, operating costs and pricing strategies in Why do medication prices differ between online pharmacies. Here we focus on how to turn those differences to your advantage — by looking at the whole basket.

The multiple-parcel trap — where your savings disappear

This is the heart of the whole problem. Imagine you need three over-the-counter medicines for your home medicine cabinet. You check the prices and it turns out each one is cheapest at a different pharmacy. Logic says: buy each where it is cheapest. Let's see what really happens to the bill when you do.

Let's assume none of these three pharmacies offers free delivery on such a small order, so each parcel carries a delivery charge (let's take a realistic £4 for a courier). Here is a comparison of the "each medicine cheapest separately" strategy against a simple "everything from one pharmacy":

Medicine	Cheapest separately (3 different pharmacies)	One pharmacy (everything together)
Painkiller	£3.50 ⭐	£4.00
Cough syrup	£5.50 ⭐	£6.50
Electrolytes (sachets)	£4.00 ⭐	£4.50
Subtotal for medicines	£13.00	£15.00
Delivery	3 × £4 = £12.00	1 × £4 = £4.00
TOTAL	£25.00	£19.00 ✅

Look at the numbers. The "each medicine cheapest" strategy wins on every single item — it has three stars, while the "one pharmacy" basket has none. And yet it loses by £6. Why? Because the £2 saved on medicine prices was more than wiped out by two extra parcels. That is the multiple-parcel trap: the saving on the product is real but small, while every additional delivery is a sudden, large cost.

What is striking is that the pharmacy which won the whole basket was not the cheapest on any medicine taken on its own. If you compared product by product, you would never have chosen it. That shows how misleading it is to look at individual prices — and why it pays to compare the whole order at once.

When does splitting an order ever make sense?

Since every additional parcel costs money, for splitting to pay off the saving on prices at the second pharmacy must exceed the cost of its delivery. In our example the individual medicines were cheaper by an average of £2, while delivery cost £4. Simple arithmetic: you would need to move at least three items, each saving around £2, to the second pharmacy just to break even on the delivery charge alone. And that is still with no guarantee the second pharmacy is actually cheaper on all three.

That is why the practical rule is: splitting an order pays off almost only when both pharmacies qualify for free delivery (that is, both baskets clear their thresholds). Then you pay for no delivery at all and can buy whatever is cheapest at each pharmacy. In every other case, a single order from a single pharmacy nearly always wins — and that is the rule it is easiest to base your everyday buying decisions on.

The simplest way to do this is in the CheaperForDrug medicine basket comparison: you drop in your whole list, and the tool calculates the total cost including delivery across various online pharmacies and points you to the cheapest option for the whole order.

Free delivery and minimum-spend thresholds — how they really work

Most online pharmacies offer free delivery, but only above a minimum-spend threshold — usually somewhere around £25 to £50. Below that amount they add a delivery charge. It is a simple mechanism, and it can completely reverse the ranking of the "cheapest" pharmacies.

The key intuition is this: sometimes it pays to add another item you genuinely need to the basket in order to clear the threshold and bring delivery down to zero. It is worth doing when the amount missing from the threshold is smaller than the delivery charge.

• Worthwhile example: your basket comes to £27, the free-delivery threshold is £30, and delivery costs £4. You add a cream or some plasters you need for £2.50 — you cross the threshold and delivery disappears. In effect you "spend" £2.50 on a product but save £4 on delivery. Pure gain, and a better-stocked medicine cabinet.
• Trap example: your basket comes to £15 and you are £15 short of the threshold. Adding products you do not need, just to "unlock" free delivery, means spending £15 to save £4. It does not pay off — it is cheaper to pay for the delivery.

Parcel locker vs courier

The delivery method also affects the final amount. Delivery to a parcel locker is usually cheaper than a courier to your door (often by a pound or two), and many pharmacies set a lower free-delivery threshold for parcel lockers. If you do not mind collecting your order yourself, choosing a parcel locker is one of the simplest ways to bring down the total cost of your order.

The problem is that thresholds, rates and available delivery methods differ at every pharmacy — working this out by hand for a dozen-plus shops is laborious and easy to get wrong. That is why the most sensible thing is to compare everything in one place that accounts for these options for you.

The home medicine cabinet as a basket — what it really costs

A home medicine cabinet is a classic "basket", not a single purchase — and that is exactly why it is the perfect example for showing the power of comparing the whole lot. Rather than recommending specific brands, it helps to think in categories. Here is a checklist of categories worth keeping to hand in a basic over-the-counter medicine cabinet:

• Painkillers and fever reducers — the basics for headaches, fever, toothache or muscle pain.
• Colds and sore throat — remedies for a runny nose, throat lozenges, and syrups for dry and chesty coughs.
• Stomach and digestion — remedies for heartburn, indigestion, bloating and diarrhoea.
• Allergies — antihistamines, eye drops, hay-fever remedies.
• Dressings and antiseptics — plasters, gauze, an elastic bandage, and a wound antiseptic.
• Electrolytes and rehydration — sachets that help with dehydration, diarrhoea or hot weather.
• Everyday vitamins — whatever you take regularly (vitamin D, for example) is worth adding to a single order.

Putting together a cabinet like this is often 7–10 items. The real cost depends on brands and pack sizes, but it is precisely at this number of products that the difference between "buying just anywhere" and comparing the whole basket becomes greatest — because both the prices and the delivery costs are multiplied by the number of items.

If you are stocking your cabinet for a specific situation, our seasonal guides will help: a flu-season medicine cabinet, a holiday and travel medicine cabinet, and a car first-aid kit. Each of these lists is a ready-made basket you can compare straight away.

How to compare a whole basket in practice (step by step)

The entire philosophy of saving on medicines comes down to one change of habit: stop comparing individual products, start comparing the whole order. Here is how to do it in three steps.

Step 1: Write out the whole list at once

Before you buy anything, gather every item you need in one place. Don't buy "one medicine at a time" as things occur to you — that is a direct route to multiple parcels and overpaying. One complete list = one order = one delivery.

Step 2: Compare the TOTAL cost including delivery

For each pharmacy, add up the total: the prices of every product plus the cost of delivery (taking free-delivery thresholds into account). That is the only number that matters. A pharmacy that is dearer on individual items, but offers free delivery and lower prices on the rest of the list, regularly wins the whole basket.

Step 3: Choose the cheapest basket, not the cheapest medicine

Make your decision on the final amount for the whole order, not on where one particular medicine happened to be a few pence cheaper. The cheapest medicine basket is the one that minimises what you actually pay at your door or your parcel locker.

Working this out by hand for various online pharmacies is practically impossible. So drop your whole list into CheaperForDrug — the comparison tool calculates the total cost including delivery across various online pharmacies and immediately shows you the cheapest pharmacy for the whole order. Our users save an average of £6 on a basket compared with buying without comparing.

The most common mistakes that cost the most

These slip-ups come up most often and hit your wallet hardest. Check whether any of them apply to you:

• Splitting an order across several pharmacies — chasing the lowest price on each item generates several parcels that cancel out the whole saving.
• Comparing prices without delivery costs — the "price of the medicine" and the "price of the order" are two different numbers; only the second one counts.
• Buying one item at a time, as needs arise — five separate orders in a month means five deliveries instead of one.
• Padding the basket to reach a threshold — clearing the free-delivery threshold only makes sense when the amount missing is smaller than the delivery charge.
• Ignoring the delivery method — a courier to your door can be dearer than a parcel locker; on a small basket that difference can be decisive.
• Choosing a pharmacy out of habit — "my usual pharmacy" is rarely the cheapest for every basket; prices and thresholds change over time.

FAQ — frequently asked questions

Is it always cheaper to buy everything from one pharmacy?

Not always, but very often — especially with small and medium baskets, where the cost of each additional parcel is large relative to the saving on prices. With big orders, where several pharmacies offer free delivery once you clear the threshold, it can sometimes pay to split into two parcels. Only by calculating the total cost of both options can you be sure — which is why it is worth using a basket comparison tool.

How do I count free delivery when comparing?

For each pharmacy, check the free-delivery threshold and compare it with the value of your basket. If the basket clears the threshold, delivery is £0. If it doesn't, add the full delivery charge to the product subtotal. Only then (products + any delivery) should you compare the amounts between pharmacies. The threshold is usually calculated on the value of the products, not on the cost of delivery.

How much does it cost to put together a home medicine cabinet?

A basic over-the-counter medicine cabinet is usually 7–10 categories of product. The exact amount depends on the brands and pack sizes you choose, which is why there is no single "list-price" answer. You will save the most by putting it together in a single order and comparing the total cost of the basket — with that many items, the differences between pharmacies add up to several pounds.

How is a basket comparison tool different from a single-medicine comparison?

An ordinary comparison shows you where one product is cheapest — and stops there. A basket comparison tool adds up the prices of all your items plus the delivery cost for each pharmacy and points you to the cheapest option for the whole order. That is a fundamental difference: the first optimises a single price, the second optimises what you actually pay for everything. CheaperForDrug compares precisely the whole basket.

Is it worth buying medicines from several pharmacies at once?

Rarely. Every additional pharmacy means a separate parcel, and the delivery cost usually outweighs the saving gained on lower prices for individual medicines. Splitting an order only makes sense when it genuinely lowers the final total — which is easiest to check by comparing the total cost of buying medicines in a single tool.

Summary

✅ One amount matters — the total cost of the order including delivery, not the price of a single medicine.

✅ Multiple parcels are the silent thief of savings — several "cheapest" pharmacies can work out dearer than one "more expensive" pharmacy with a single delivery.

✅ Free-delivery thresholds work in your favour — but only when the amount missing is smaller than the delivery charge.

✅ Stock your home medicine cabinet as a basket — one list, one order, one delivery.

✅ Choose the cheapest basket, not the cheapest medicine — that is a difference of around £6 on an order.

Disclaimer

This article is for information only and concerns solely the cost of buying over-the-counter medicines and supplements. It does not replace the advice of a pharmacist or doctor and is not a recommendation to use any particular product. Before using any medicine, read the patient information leaflet or consult a doctor or pharmacist, as any medicine used improperly poses a risk to your life or health.

Ready to stop overpaying? Write out all the medicines and supplements you need, then compare the whole basket on CheaperForDrug — we will show you the cheapest pharmacy for the whole order, with the delivery cost counted into the final price, from various online pharmacies.