eBay obviously don't give a crap.
I find it amusing that eBay will limit the amount of money one can charge to post a DVD (for example) but allows a moron to start the auction price of a broken Amiga 1000 at $2,000.
If eBay wants customers in the long term they would restrict such idiots from being able to list at that price in the first place.
Problem is Ebay has no idea what some of these things are worth. Some of the first Apples might go for $20,000 if a fully functional AAA prototype were to show up that could be worth thousands.