22-rimfire has it right. Several of us do it. It has been my experience that certain vendors tend to have the best prices on a given make, model, and caliber I need, but rarely have the best prices on all makes, models, and calibers. For example, I get my Blazer .45 acp from Natchez, but my Hornady .45-70 from Sportsmans Guide (sometimes 9mm, 5.56, too), and .308 from Ammoman.