Ryan, I'm the seller of the Rochelle box currently on ebay. It's a few months old, in excellent condition. My one caveat is that I am offering free shipping to the U.S. but cannot do the same for UK addresses. If you would like to bid on the concertina or arrange a sale through this forum, I will do my best to ship it to you at the most reasonable rate I can find.
All the best,
Josh Perkins