I can tell you that there were at least 3 people that have been turned down on buying the blue RS for above $1.2m- I tendered an offer for a client this past April that was immediately rejected by the owner. We can all speculate why nobody else bid at the auction, but the fact is some serious buyers were not there and are willing to pay more to this day. The new owner (Scott) made a great purchase. I, too, had been told there were absentee bids in excess of $1m, so I was not there to bid nor was I on the phone. In fact, I was racing at Road America. I did buy the triple black LS6 convertible from Dave's collection over the phone during the Mecum sale. I should have stayed on the line.
As you can see from this thread, the amount of ZL1's with no stories is far less than 69. And of the ones that are "good", how many are original paint? Bingo- the one that sold at Mecum. We can all play armchair quarterback with values until we are blue in the face, where the rubber meets the road is when a willing buyer and a willing seller agree on a price and a car changes hands. There is a reason most of these high end transactions are private, and a reason so few of these special cars end up at live auctions. Most don't need to go looking for a buyer, nor do they need to pay the fees or run the risk of something like a no-reserve sale. Just my humble opinion.
Colin