Weaver or W&C are the only way to go as far as price. I have been ordering from them since 2007 and have never heard of a minimum order restriction. I have tried several other companies and no one can beat the prices while sustaining quality at the same time. If I need something in a pinch I will go to TLF because of SLC charging folk to get the best price.
Weaver sells IMPORTED, HO and CH leather. I have no idea of where they get the imported leather (if I had to guess it still comes from mexico and is just Mexican hides...) and it is hit and miss with quality. I like the Ch leather, but it depends on what you are getting... The strap hides tend to be softer than I like but the latigo and harness are great. And you are not going to get HO cheaper anywhere else.