I never quite know what's a good price for some items on eBay. I bought a Zoom q2 hd camcorder some while back at a price which I thought was reasonable. It seems to work fine, and is probably in better condition than one I borrowed last year. OTOH Zoom q3 hds seem hard to find, and can fetch over £100. There is one at present - usually a "new" listing appears every few weeks. I might bite on this one, but I can wait - though sometimes waiting puts a purchase off for ever.
I usually try to monitor the prices that things go for. It is in the nature of auctions that if you are successful, then on the day you have paid more than anyone else was prepared to offer, but the prices can vary a lot over time.

