I ordered this about a month ago and received 11 beautiful, healthy snails of various sizes, all of which are still alive and well. My 3 gal nanotank was completely overrun with algae, and it took a little bit but I'm proud to say that they did their job well and now my tank is practically algae free (I will be moving them to other tanks with algae to keep the snails happy and the algae down in those tanks). My only complaint is that shipping was the same price as the snails + the heat pack, and that it took a week and a half to arrive, but that's to be expected with smaller businesses so I don't mind all that much. Overall, very happy with my purchase - the snails are fascinating creatures and as a biology nerd, I'm very pleased with how much I've learned about them just from watching them go about their lives.
5/5 would buy again and would definitely recommend to anyone struggling with algae, especially in a nanotank where other snails are too big.