I don't buy from them on a regular basis because when I look in their tanks there is invariably a lot of sick or dead fish and their tanks are on a central system which means everything has exposure to everything else. They are big corporation, not a LFS.
Neons and particularly cardinals are always problematic. They are fragile when taken out of their natural environment. Jason at A&E used to get several thousand cardinals directly from South America from a supplier that had a secret recipe for conditioning them. The last order he got I bought 40 of them and only lost 4. That was a couple of years ago, the guy in S.A. got cancer and doesn't ship cardinals any more.
I bought 15 two weeks ago and now have 4 left. There is nothing more beautiful a school of them, but it's always a problem actually achieving it.