I own a C tuned Le Capitaine made by Danny Dyson of Big Lake (Lake Charles) and JB in San Antonio has a D box as well. They are very nice accordions and will last you your lifetime. Danny is a great guy and very helpful to anyone who owns one of his boxes even if you are not the original owner. He taught himself to build and is close to Larry Miller.
I just took a look at the one on Ebay and it looks great. Unusual to have the bellows divider. By the way, Danny has stopped building for the moment. Last I talked to him in October, he was planning on starting again...just was no longer taking orders. I think his Native American flutes are occupying his shop time. see link #2 above
Leland Colligan (337-255-4024) who makes "Acadiana" accordions (the kind played by Jimmy Breaux w/ BeauSoleil) has a newly C for sale right now. I think he is selling it for $1,800.