The cost of an order on Amazon UK depends on many factors, such as product category, selling price, logistics costs, platform commissions, etc.

Here are some rough estimates of the costs:

1. Platform commission: Amazon UK's commission rate is usually a certain percentage of the sales price, and the specific percentage depends on the product category and selling price.

2. Logistics costs: Amazon UK's logistics costs are usually borne by the seller, and the specific costs depend on factors such as transportation distance and package weight.

3. Taxes: Goods sold in the UK are subject to taxes such as consumption tax and value-added tax, and the specific tax rate depends on the product category and selling price.

4. Advertising costs: If the seller chooses to advertise on Amazon UK, he or she will also need to pay advertising fees.

In general, the cost of an order on Amazon UK may range from a few pounds to tens of pounds, depending on factors such as product category, selling price, logistics costs, platform commissions and other costs.