I don't think you're shopping right. Also, sweet lord how much bedding do you think it takes to fill a tub? I've bought a 20 dollar bag of compressed aspen shavings at a reptile expo and it lasted me a good 3 months with between 3 and 6 snakes and would have been longer except I switched to paper towels, which is still only about 6 to 10 dollars a month for 11 snakes at this point (depending on poo frequency). Ordering bulk frozen rodents online is also cheaper, since small rats will run about 2 or 3 dollars per (plus 30 dollars for shipping, but eh). Part of owning lots of snakes is shopping efficiently.