I have been watching about 15 auctions on eBay. they're retaining they're value like mad. most auctions have ended for around $100-120. that's almost the price of a brand new 23" monitor!
but I lucked out and found someone selling a working adapter without the power cord for $60...the power cord is just a standard C5 cord so I can pick that up separately. but dang, this thing is still pretty expensive.