When things actually sell for high prices it's good feedback for companies to keep making stuff for Amiga.
You probably get both extremes in the second hand market, some hobbies only have cheapskates, others are full of speculators.
The problem with ebay is that there is no punishment for having a flood of high price buy it now listings. I believe it is only a 5 cent listing fee.
I wonder if those people have a read a book on: how to make money on ebay. Every hobby seems to have people listing and relisting stuff that is way over what people are prepared to pay.
