Thanks for posting. I confirm these are 43mm. He's the same guy who sold a bunch of Paulson and BJ racks about a month ago. He did up his price as the demand from us went up. He accepted $55 shipped (like $3.50/rack before shipping) but was hesitant to go lower at the moment. I like these better at $48 shipped for 12, but it all depends on your need.
Very responsive and nice guy. No issues on the seller front.