Razor Subscription vs Buying from the Supermarket: Which Saves You More?

Ask most people why they buy razors from the supermarket and the answer is some version of: it’s just what I’ve always done. They pick up a pack when they run out, pay whatever it costs, and don’t think about it too hard. The price feels acceptable because it’s absorbed into a larger shop.

But the supermarket shaving aisle is one of the highest-margin retail spaces in the UK grocery sector. Replacement blade cartridges carry markups that would be considered extraordinary in almost any other product category. And the model is designed so that you don’t notice — because you’re buying four at a time, not calculating the annual total.

This article does that calculation for you. The results are not subtle.

The True Annual Cost of Supermarket Shaving

Let’s start with the numbers. A pack of four premium cartridge blades at a major UK supermarket — the kind you’d actually want to use for a close, comfortable shave — costs between £12 and £18 depending on brand and blade count. That works out to £3 to £4.50 per cartridge.

Dermatologists recommend replacing your blade every five to seven shaves. For a daily shaver, that means roughly 52 cartridges per year. Most people don’t change their blades anything like this often — but let’s calculate what it would cost to do it correctly through supermarket purchasing, and what the gap looks like at more typical replacement frequencies.

The table reveals something important. On raw cartridge-for-cartridge cost, a subscription makes the most sense for daily shavers who change their blades as recommended — and for everyone, it eliminates the variability and inflation risk of retail pricing. But there’s a dimension the table doesn’t capture: the quality of the shave at each price point.

Most people who buy from the supermarket stretch their blades to two, three, or four weeks. They’re not actually buying 52 cartridges a year — they’re buying 15 to 20, and shaving with blades that are past their useful life for most of that time. The subscription corrects this behaviour automatically, because fresh blades arrive and get used, because you’ve already paid for them.

The One-Off Kit: A Middle Ground That Makes Sense

Not everyone wants a subscription. Some people shave infrequently, travel often, or simply prefer to buy on their own terms. SmartShave’s one-off kit at £19.99 is designed for exactly this use case. You get a handle and a supply of blades — and from that point, replacement cartridges are available to buy directly from the SmartShave website at any time, without subscribing. You order when you want, as many as you need, at the same lower-than-retail per-blade cost.

This is still a better deal than the supermarket, for two reasons: the per-blade cost is lower, and — crucially — the cartridges arrive at your door when you order them, which means no trip to the shop on the morning you realise you’ve run out.

What the Saving Actually Buys You

Beyond the monetary calculation, there’s a subtler form of value that a subscription provides. The friction of buying razors — remembering to do it, making the trip, choosing from a confusing array of options — is a recurring minor irritant. Trivial individually, but genuinely present. A subscription removes it entirely from your mental load.

You will never stand in a Boots queue for razor cartridges again. You will never reach for your razor and discover you finished the last one three shaves ago. You will never use a blade you know is too old because the alternative is a worse-timed trip to the supermarket. These small frictions, removed, add up to something worth having.

The subscription costs less. The shave is better. And the decision is made once, not every time you run low. That is, by most reasonable measures, the better deal.