Stay away from Craigs list. Nothing but scammers. Use Ebay if you must but you should buy from a dealer. The Button Box in MA is an excellent dealer. They sell the Weltmeister Cajun and can get you a C box. Try Gabbanelli, they have them in stock.If you buy the Gabbanelli, get Tip A Mono reeds. If you are low on funds then try Marc Savoy, he might have a used box for sale. Good luck.
As for Button Box the Weltmeisters there are quite expensive compared to europe, even the Cajun tuned ones. It's quality is just not good enough to justify 1200 U$D, and the reeds are not as tough as binci's and the sound is mediocre .... A Gabinelli probably would be a far better choice, if coming from texas and fitted with a better class reeds. - Nout
Just purchase a NEW Gabbanelli Cajun King. It will last long enough for you to cut your teeth. If your gums become infected, it's your's to keep in the corner of your closet as a reminder that your head was there but your heart wasn't but you're not out of a lot of money... just low T levels and disinterest in taking on any new hobbies.
Here's the link... http://gabbanelli.gostorego.com/accordions/cajun-king.html