BoroMarket will typically sell "Kitty Glass" and up. My glass is on the low end of the quality spectrum there. Its mostly all heady, zero production or import pieces.
Most auctions are for $$ some are $$$ and a few can even get up to $1k-5k ranges depending on what is for sale.
Some concentrate dishes go for $300
Everything is pretty, and everything is perfect there.
About 1/4 of the glass is offered by the artist who made it. About 3/4 of the glass is resale/previously admired.
Its just a very weird place, with respect to bidding via message board.