I have collected alot of things in life and found one thing to be true; as the prices rise, the availablity increases.
When I started Ebay in 1998, there were only 100-150 items listed on "Honda". Cars , bikes anything Honda....just 100-150 items. Sure the prices were lower, but hardly anything was for sale.
Sometimes, it is just dumb luck, and you get something dirt cheap on Ebay. But, as the Scottish say "The value of something is what it will fetch"
If prices drop, and probably won't on rare items, availability will drop , as people will wait until the time comes that they can get more money for the item.
For those that complain about prices, do you expect to give stuff away, or get the most you can like the other guys?