Didn't quite come out how I meant was more with things like that they normally sell better on eBay than what people think their worth if their trying to get you to sell them cheap (happened to a mate of mine, he had some old vintage tamiya cars that work colleague gave him silly money for cos he didn't know what they were worth, the guy knew what they were worth then went on to sell them for £150 odd each!!)
Sorry to hear about your friend he'll be glad to know their being sold to people who want them rather than thrown away or sold to any old person!!
Always liked the idea of that sort of thing but never really got into it