I think you're wrong about shill bidding.
One bidder has a feedback score of 661 with 0% previous activity with this seller, another has fb of 1683 & 7%, another has fb of 52 & 60% of his 5 bids have been on this one item, another has fb of 53 & 5%.
What I find more worrying is that someone who allegedly owns a convertible can't spell 'convertible'.