Hi Guitarmaker. A lot of times it's simply because the independant builders aren't known except to their friends and customers.Two folks I've tried to plug as often as I can, are Glen Reid from Burk's Fall Ontario, and Peter Cox from Barrie Ontario. They both build fine sounding instruments at reasonable prices.
Both Jean Larrivee and Mr. Godin (father of the Quebec guitar industry...Seagulls, Simon and Patrick etc.) obviously had good marketing skills to go along with their building skills.
Are your instruments on the web somewhere.
Rick