Compare pack prices including delivery costs
By DailyUseKit · Published 5 October 2026
The cheaper shelf price is not always the cheaper delivered price. When two sellers use different delivery charges, include those charges before comparing their packs. The aim is to compare the amount you will actually pay for the same usable quantity.
All amounts below are illustrative and use one currency. The unit price calculator does not have a separate delivery field. Add applicable charges to each pack price yourself before entering the totals.
Put both quantities in the same unit
Suppose Seller A offers a 500 g bag for 45 and Seller B offers a 1 kg bag for 80. Convert 500 g to 0.5 kg with the unit converter. Without delivery, the unit prices are 45 ÷ 0.5 = 90 per kg and 80 ÷ 1 = 80 per kg. Seller B has the lower item-only unit price.
Add each seller's delivery charge
Now suppose delivery costs 15 for Seller A's bag and 50 for Seller B's bag. The delivered totals become 60 and 130. Enter 60 with a quantity of 0.5 for Pack A, and 130 with a quantity of 1 for Pack B.
| Cost or quantity | Seller A | Seller B |
|---|---|---|
| Quantity in kg | 0.5 | 1 |
| Item price | 45 | 80 |
| Delivery | 15 | 50 |
| Total paid | 60 | 130 |
| Delivered price per kg | 120 | 130 |
Seller A now has the lower delivered unit price. Its 120 per kg is approximately 7.69% below Seller B's 130 per kg. Seller A also provides half the quantity, so check whether buying another bag would trigger another delivery charge.
Find where the comparison becomes equal
With Seller A fixed at 120 per kg, Seller B's 1 kg bag matches it when its total is 120. Since the item costs 80, delivery of 40 gives an equal delivered unit price. Below 40, Seller B is cheaper per kg; above 40, Seller A is cheaper under the same one-bag assumptions.
Allocate delivery across a shared order
A delivery charge may apply to an order rather than each pack. If you buy two identical 1 kg bags at 80 each and pay one delivery charge of 20, the total is 180 for 2 kg. The delivered unit price is 90 per kg. You can enter 180 and 2 directly in the calculator.
Alternatively, allocate 10 delivery to each bag and compare a price of 90 for 1 kg. Both methods give the same answer. Do not add the full 20 charge to both bags, because that would count the order's delivery twice. For mixed products, choose and document an allocation method appropriate to the comparison; equal division is not always meaningful.
Check conditions before deciding
Delivery thresholds, remote-area surcharges, discounts and collection options can change the total. Include mandatory charges that apply to your actual order. Quality, storage, spoilage and the cash required upfront also matter.
This comparison does not estimate shipping charges, convert currencies or determine taxes. Use the quoted checkout amounts for your location and order. For a reduced item price, use the discount calculator first, then add delivery before comparing the packs.