Interesting comment in USA TODAY about the BJ auction, sounds about right to me.
David C
With every car at Barrett-Jackson sold on the block at no reserve, which means there is no minimum price to buy, the reverberation of each sale can lift or deflate prices for that type of collector car across the country. Although, sometimes, it's just a case of two guys battling it out over something they both desire.
Such was the case with last year's surprising high result for a 1967 Amphicar, a little oddball craft that can drive on a road or sail in a lake. Two bidders pushed the final sale up to $93,500, more than three times the going rate.
Amphicar owners everywhere rejoiced, and the cars now often appear at major auctions where excellent examples sell in the $50,000-to-$60,000 range, about double the price before the Barrett-Jackson sale.