His prices are always crazy high.
Especially the ones starting at EUR 1,-. Creazy ;-) (sorry for the sarcasm)
Some of the auctions are ending tomorrow.
Concerning the prices, I try to offer them at fair prices (for buyer and seller). I sell the Derringer, because I got one with the original box, manuals etc. and I paid way more than the price I ask on ebay. The US-dollar seems to be quite weak against the Euro, so maybe the prices seem to go steep.
If you paid USD 250,- for an Amiga-item 10 years ago, USD 500,- is not a bad price for it today (for most amiga items prices rose even higher). Anyway, you can always make me an offer, if you think prices are to high.