One of the sporting clays facilities we frequent will allow you to purchase the amount of shells you intend to shoot that day. This spring and early summer I was buying Fiocchi 28 gauge at 8.50 per box. A screamer of a deal IMO in todays world, probably picked up a couple of flats over the course of time in this manner. Weekend before last the Owner advised that he was unable to find any Fiocchi so he had to buy Federals which were a bit higher. He quoted the price of $15 and some changer per box !