I'm only charging for my bags and insalation not for the actual shipping.. Not in it for the big bucks just have lots of extra these guys don't eat plants they will eat dead plant matter but nothing alive they lay there eggs above water so if I don't want more I can just toss the egg sack my water is 6.8ph temp is 78 to 80 and the rest depends on each tank but I have them in all my shrimp tanks and nothing changes with the snails they aren't picky with water I promise, just be sure there's filtration at the least:)