I've seen MegAChips go for anywhere from $25 to $85.
I bought one for $24--$28 with shipping. I've seen them go for well above $100. The Amiga market is kind of crazy. I've seen this as both a buyer and seller. Certain things--like the megachip--fluctuate wildly. If you take good pictures and describe and document things well, you'll get good prices generally. Reserve prices discourage bidders and increase your ebay fees considerably. It's better and cheaper to set the minumum bid at the minumum amount you're willing to sell for. If I want to bid on something, I want that bid to count and I seldom bid on reserve auctions. There is an aspect of gaming to to Ebay and reserve auctions are no fun. If I win an auction, I want the prize.
:-D :-D :-D