eBay don't read here, nor do they care that you've only just found this out after SIX years.

That is how long they've been charging FVFs on postage. Maybe check your account more often, or build your costs into your prices.

As far as auctions go, that's a mug's game unless you don't know what something is worth. And YOU have total control over your starting price, so it is in your hands.