Thats messed up. Alot. And id believe it.
Yeah they should ALL stop selling live stuff, since all they want is money, -just stick with things you dont have to worry about dying/going bad/ knowing anything about.
lol ive never seen someones fish tank that croweded, we used to have fish we got from pet stores and the most we had was like 6 in a 10 gallon. But they were all small