Wait, you posted an item on eBay "by mistake"?
Oh, I accidentaly wrote a selling text about this rare hardware item, registered it to an auction and it just so happened that I pasted the selling text and then all of a sudden I had to ship this item into oblivion!
I'm just thinking that when you run a business you keep track of what's for sale and what's not. Personally, my parents threw out a lot of Amiga goodies when I moved out. A simple post-it sticker would prevent this, as you have just learnt the hard way.