I was about to list some of my old computer science books on eBay, but they wanted me to list them with free postage. I have asked for that in the Post Office before now, but they just laughed.

Presumably the idea is that I will include the postage in my starting price, and then eBay can charge their percentage final value fee on the postage as well as the item. Greedy.

Anyway, I have listed the books on Amazon instead. Their charges are fair, and visible when you list the item.