I lucked out today, I actually found a store in Jefferson, OH that had 16 gauge buck! $3.99 for Remington, 4.99 for Federal.
SHHHHHHH ! this store needs to be kept nameless.
only buckshot i can find is for reloads @ 25 bucks for 5 lb!!
Try loading your own, it's fun and easy. I am using the old Lee Load All hand tool. Win AA hulls and wads, 36.0 gr HS6, 9 pellets of 0.31" dia. pellets (between #1 buck and 0 buck in size) gets great groups at HD ranges. I am going to try some Lee 1 oz. slugs too.