Here in the south island of New Zealand (population a bit over 1 million), there seems more-or-less zero chance of coming across a CBA for sale, and I don't suppose teachers are any more common. I think there's one specialist (piano) accordion supplier in Auckland, a one-hour 'plane ride away... So, whether I prefer B- or C- system seems academic, and equally problematical. From previous threads, it appears that learning B-system fingering (and C-system too, for all I know) is a DIY task anyway. Perhaps I should give up and take up knitting...
However, before I rush out and get wool, etc., any suggestions about how someone in the third world might obtain a quality CBA (or bayan, not sure about the terminology) without having to sell the farm?
I realise I'm too old to get anything like proficient, and you might think quality is wasted on a beginner, but I would wish for a quality instrument so that its value is retained for the time when it has to be sold (by my survivors...).