AdBrite’s $50,000 CPM Full Page Ads — What Kind of BS is This?

I sign up for AdBrite and sign up for full page ads just to see if I can make any money, then I start getting bids for $100, $200, all the way up to $50,000 CPM. I read the about page, and it says that the bids listed are maximum bids. After accepting a bunch of these, I’m only making about $1.50 CPM from the ads. Is it possible to actually make the maximum bids or even come close, or is the bid number just complete bs? If I accept a lot of cheaper ads, will they start paying more to beat the cheaper bids? Anyone with any AdBrite experience?

See original post by airraid81