It's very easy to overpay for pieces at these auctions. Just go to ebay and do a search on "park west." up will come dozens of pieces purchased at sea, and the bids will be only 1/2 to 1/3 of the price paid.
park west pushes peter max. they tout him as an investment.
i've bought an erte at a reasonable valuation, though, and i'm happy with it.