Some of them are trying to flip it Buy or Lease Brown.com
They put their domains over priced so they can get cheap eBay traffic.
If you see a overpriced domain on eBay for a million dollars people will go to this domain's URL and see whats there.
Plus they always can get the sale if some parent lets their child login to eBay.
BTW I'm selling on eBay domains and my starting prices are $0.99 and $9.99 so I'm not using these excessive methods.
Suckers? When was the last time you saw a sucker buying a crappy domain in the $x,xxx,xxx range? The cheap traffic is what it is; cheap. It will not convert, so it's not really a smart tactic imho.
And high PPC either!