Different items attract different categories of fees - you have to pay to list, so e.g. I'm currently selling something for £40, the listing fee is £1, then they take a small percentage of the final selling price. As sinderella says you have to factor in the cost of postage and packing but that's separate, you don't pay fees on that, only the final cost of the item. PayPal fees are a small amount too, on the final selling price, but IMO worth it for the security of the transaction. Your best bet is to look at the link Trim's given you, tool around until you find the category you are looking for.