[Dan Semko]

I think they're just using ebay as a marketing tool and calculate what similar advertising would cost in national auto mags. Sometimes they fare well other times the bidder cleans their clocks.
You don't see many alloy CSX's available because everyone knows that they'll appreciate with time. Most alloy CSX's with 427's are currently appraised around $139k. It shocked me too, so I called the "New Jersey guru", Evan who confirmed that his CSX was recently appraised around the same amount.