Damn. I found a NOS pair of Ravello shells about five years ago. IIRC I sold them for like $350 or something to a member here. If I'd known the shell market was going to go crazy like it has, I'd have hung on to them.
I know, right? Must have been some people just wanting to mess with the seller.
I like to occasionally browse sold listings in the Men's Clothing and Vintage sections and sort by highest price first, just to see what people are fighting over. Always turns up some interesting stuff.