Quick answer: Neither a meal kit nor a self-planned shop is always cheaper. For the same number of dinners and people, compare the meal kit's full delivered order total plus anything you must buy separately with the supermarket's whole-pack basket plus any collection or delivery charge. Then calculate the ingredients actually used as a second figure. Do not compare a meal kit's first-box offer with a supermarket's regular pack spend, or treat unused supermarket food as free.
The figure that matters for this week's bank balance is what you pay this week. A used-ingredient figure can help you plan later meals, but only if the remaining food is genuinely usable. This is an editorial method from Smaklig. It does not describe a live Smaklig UK basket, price feed, retailer integration or checkout.
Start with the same dinners and portions#
Choose a real week before opening either basket. For example, compare three evening meals for two people: six planned portions. Keep the recipes as similar as practical in ingredient, portion size and preparation. A box with three meat or fish dishes should not be compared with a supermarket basket of three smaller vegetable dishes and presented as a like-for-like price test. If a recipe is unsuitable, change both sides and record why.
For each route, write down the delivery postcode, delivery or collection day, date of the quote, number of recipes and people, and any substitutions. Prices and availability can differ by address, offer, recipe choice and time. A current screenshot or basket record is stronger evidence than a headline “from” price; it is still a snapshot, not a UK-wide guarantee.
| Record for the same week | Meal kit | Your supermarket shop |
|---|---|---|
| Meals supplied | Selected recipes × portions; note any extras or missed meals. | Full recipes × portions; list every ingredient and quantity. |
| Price paid now | Box at the selected size, delivery, selected premium dishes and extras. | Actual purchasable pack sizes, discounts you are eligible for, delivery/collection fee and any minimum-order charge that applies. |
| Food outside the order | Oil, salt, rice or other basics only if the chosen recipe requires them and they are not supplied. | Food already at home used for these dinners; record its quantity and an honest allocated cost separately. |
| Next order | Record the actual payable next-box total with any eligible offer, delivery, extras and cut-off. Separately note when the introductory offer ends and the later regular total for the same box. | There is no meal-kit renewal; prepare a new shop if you want another week's dinners. |
| What remains | Delivered ingredient excess, extra portions or bought cupboard basics. | Unused parts of paid-for packs, other items in a minimum-spend basket or leftovers. |
The CMA's UK price-transparency guidance says sellers should show total prices including mandatory charges. For your own comparison, use the final payable basket, even where a site displays a lower component price. On its box-prices page, Gousto displays a first-box promotion, a usually-priced box and a notice that prices exclude delivery; the page says the first box has free delivery. That visible price is not evidence of what your later delivered order will cost. HelloFresh's UK FAQ says box size, selected meals and add-ons affect the charge, and selected Premium meals or extras increase the total. Check the order you have built, not a generic provider table.
Calculate two different figures, without mixing them#
Cash spent this week is the total leaving your account for these dinners. For a box, add the actual delivered order total and any missing ingredients you need to buy. For self-shopping, add the full price of every pack you need, plus the applicable shop delivery or collection charge and unavoidable fees. If an ingredient was already at home, say so: its new cash spend is £0, although it still has value and will need replacing at some point.
Used-ingredient cost allocates the cost of each paid-for pack to the amount used in these dinners. If a 500 g pack costs £2 and a recipe uses 200 g, the allocated ingredient cost is £0.80; you nevertheless paid £2 at checkout. This example is arithmetic only, not a current product price. Record the remaining 300 g as a real ingredient with a plausible next use, or acknowledge that its value may be lost. Include cooking essentials consumed on both sides, and keep delivery as a separately labelled service cost if showing a per-portion figure.
Here is a wholly hypothetical arithmetic example, not a quote from Gousto, HelloFresh, Tesco or any other seller:
| Three dinners × two people | Meal kit | Self-shop |
|---|---|---|
| Chosen box or all purchased food packs | £42.00 | £39.00 |
| Delivery or collection | £4.00 | £3.00 |
| Selected meal supplement | £2.00 | £0.00 |
| Missing basics bought for these dinners | £1.00 | £0.00 |
| Cash paid this week | £49.00 | £42.00 |
| Cash paid ÷ six planned portions | £8.17 | £7.00 |
| Self-shop ingredient value actually used, if separately measured | — | £31.00 of the £39.00 packs |
The self-shop's remaining £8.00 of pack value is not a cash saving. It might feed a later meal; it might expire or be discarded. Do not silently subtract it from the £42.00 paid. The kit's £49.00 includes the hypothetical delivery and supplement, but this exercise assumes no other required ingredients or unaccounted leftovers. The example does not prove that shopping is £7 cheaper in a real UK postcode, that portions are nutritionally equivalent, or that a kit always costs more. Rebuild the table using the two actual baskets before drawing a conclusion.
For a recurring kit, repeat the calculation for each actual payable box you expect to receive and again after any introductory offer ends. Check the current terms and full checkout total for your postcode and chosen meals. Do not multiply one week's difference by 52.
Put the leftovers to a real use#
A remaining half-pack is useful only if it fits another meal and can be stored safely. Write the next recipe beside it, with a date. If there is no realistic use, do not claim that its allocated cost is a saving. Conversely, a kit may leave portions or unopened ingredients too; record those rather than treating the box as perfectly measured by definition. Either route can create food waste, and this cost worksheet does not establish an environmental winner.
Follow the package's storage and use-by instructions. The Food Standards Agency's cooking guidance says cooked leftovers should be cooled and refrigerated within two hours, eaten within 48 hours or frozen if that is not possible, and reheated only once. Food Standards Scotland's chilling advice also advises eating leftovers within two days. Those general rules do not override more specific instructions for a particular food.
Which cost should decide your week?#
If money available this week is the constraint, compare cash paid. If you routinely use the rest of a pack, track its later meal as well so you do not charge the same pack twice. If convenience matters, note the planning, shopping, delivery-window and preparation work you actually do; do not assume either option saves a fixed number of minutes. A box may be worth paying for during a busy week, while an own shop may suit a week when you already have ingredients. The comparison is a choice about your actual household, not a universal verdict.
Check allergies independently on both routes. The NHS guide to food labels says pre-packed ingredient lists highlight allergens. Read the current box recipe and every delivered pack, including substitutions, or the actual supermarket pack and replacements. A price, menu category or AI-generated description does not establish safety for a person with a food allergy. AI-generated content. Always verify ingredients and allergen information yourself.
Before paying, copy these six figures into your own note: (1) dinners × people, (2) complete first-box checkout total, (3) complete later-box total and renewal cut-off, (4) full supermarket basket total including applicable fulfilment, (5) used ingredient value with the remaining packs listed, and (6) extra items needed outside either order. Keep the dated basket evidence. If a total is missing, the answer is not yet known.
Editorial sources directly checked 23 September 2026: CMA price-transparency summary, Gousto box-prices page, HelloFresh UK FAQ, FSA cooking guidance, Food Standards Scotland chilling advice, and NHS food-label guide. Provider statements describe what those providers publish, not a completed order or independently verified current price. Check all changing terms and the full payable order before subscribing.
Sources and further reading
- Clear and accurate price information — Competition and Markets Authority
- Gousto box prices — Gousto
- Cooking your food — Food Standards Agency
- About HelloFresh: frequently asked questions — HelloFresh
- Chilling food — Food Standards Scotland
- How to read food labels — NHS