I have free baby pond snails that I will send to anyone in the U.S. for the cost of shipping a padded bubble envelope (should be around $1.96 depending on where you live).
I am trying to get two other snail species breeding in my tank and of course the interloper pond snails that rode in on the plants got to it first :P I feel bad about smushing newborn snails so if anyone wants to give them a good home I'd rather ship them than keep killing them. The babies are the size of grains of salt right now. I will include as many as you want, basically. I may be able to snatch an adult or two as well.
Just PM me if you want some pond snails.
I do have populations of Malaysian Trumpet Snails and Ramshorn snails so if you're interested in either of those species let me know and I'll put you on a list to contact when I'm ready with babies from them too. I will probably ask for $1 for a container of MTS snails because they were expensive but the Ramshorns will be free.
PLEASE NOTE: Snails are really tenacious invasive species in many places, so if you want snails from me you must promise me you will never, ever set a snail free in the wild, or otherwise dispose of a snail where it could escape into the environment and wreak havoc on your native wildlife populations.