pennsylvania

I have a 55 gallon long saltwater aquarium with sump and metal stand, 2 power heads, 2 heaters, 2 penguin filter, mag pump, return pipe, overflow box, uv steralizer, some live rock, about 80 lbs of live sand, 1 clown fish, 1 damsel, water test kit, purple up, current usa power compact fixture...

I am a university student doing a project on freshwater snails, and I am looking to set up a small tank with a variety of species and color morphs or snails. I am interested in doing a Paypal purchase of mixed variety of snails. I only need one or two of each, just a good example of the species...