I've honestly become oblivious to all of these crazy prices that I wouldn't even know what a good price is. I mean, I know that $2k+ is crazy for a model 1, but on the other hand, I only paid $50 (locally) for my Model 4 which obviously is a good price. I did need to do some minor repairs to mine but generally it's in good shape. On the other hand, I saw someone selling a pretty poor shape Model 3 at a local swap meet for $100 and told me that he's seen them go for as much as $1000 (uh huh)... I smiled and went on my way... It wasn't necessarily a bad price, but I didn't need another project for that price nor do I have the space anyway.
But, yeah, I'm a bit torn on the topic. I think people can sell things for whatever they want and if it's not a good price, then they won't sell it. It'll be sad if it winds up in a landfill because of that, but I'm not going to get annoyed that they price things unreasonably. What is interesting on this topic and I'm not sure why it seems specific to retro computers is the anger people get when vintage computers are listed at over the top prices. If we saw someone selling a new Dell computer for $1000 above MSRP I think we'd all laugh and move on.. but I watch the threads on the forums and FB and for some reason people get downright angry and insulting to sellers about their pricing and i'm not sure why. It's not like they're overcharging for water during a natural disaster.
I guess it's just the way I think though. I see a price and if I think it's good and I want it, i get it.. if it's not, i just move on knowing that eventually i'll come across it again.
Interestingly, the guy is selling other stuff for crazy amounts.. he clearly isn't tech knowledgeable. I do like the TRS-80 Cassette Player he's listing for $200-300... the same type I gave away to a friend of mine because I swapped mine out for a beige model that matched my Model 4 better.