The bidding at eBay often goes nuts.
I just watched a well used PAW .03 with the control line/free flight venturi and needle valve go for
more than the price new one with the R/C carburettor.
I suppose some day there will be something really worthwhile offered tthat I'd bid on to my own limit, but until then I'll just look in the various stores for "buy it now" items and forget the hassles.