you can try to ask different lfs's if you can just have a few...I've done it before and gotten several pond snails and ramshorn snails... I even got a few malaysian trumpet snails for free too. I work for a pet store and I have given a few away to people who are wondering why their puffers aren't eating flake food... all you need are a few and you can start your own culture of them. It's worth a shot.