Only 1 manufacturer of these doors and thats Tri-Plus, so LMC's doors, Goodmarks doors and ours are all manufactured by Tri-Plus. Heres a link to ours for $279.95ea + shipping, we carry both 69-71 Blazer doors, & both 72 Blazer doors.
http://www.gmcpauls.com/Body&Bumpers.htm
GMCPaul