that's an awfully confident statement and an odd number to make it about, curious what makes you so sure. the low dollar certainly will help, but 3700+ copies of a $110+ set is a lot. the 5 CD Art Ensemble box Chuck Nessa put out in 1993 was available until pretty recently, that was an edition of 2500 copies.
The Mosaic "cachet" , glossy catalog, and much more saturated marketing/distribution than what Chuck could afford should guarantee more/faster sales, or I'll eat my hat.