I was looking for a V-Series 12" Vortex Fan
New they run about $650 but I was lucky enough to get a great used one on Ebay for less than half that cost.
On Craigslist I see a few for $450 each
Ebay Works & Works Well
A quick search of completed items shows you're lying. None have sold on eBay in the last 30 days. A quick search of active listings shows they're selling for $699 on eBay, again, you're lying.
If you're going to lie, at least have some backup plan when anyone can do an eBay search to prove you're full of it.