How come some sellers are able to sell items with free postage for less than the postage costs?
There's a seller selling an item for £1.12 with free postage, listed as Royal Mail 2nd Class Signed For. That costs a minimum of £1.89 for the size of item they're selling.
I know you can get bulk postage discounts, but with the cost of the item and the cost of postage surely they are still on negative margins?