My 50 gallon is overflowing with a bunch of different ramshorns. I have leopards, the regulars, and there's just so many of them that I can't differentiate for orders.... Sorry!Shipping will be $6 and through priority. I don't have kordon breather bags, but I do have other bags that I'll fill with oxygen for them. You MIGHT get 1 or 2 stray mystery snails babies in with them, but they're small right now so if you don't want them you can probably get rid of them easily.