Thank you all for your responses. I must say that I wouldn't buy ANYTHING from Walmart, let alone tropical fish, but that's another topic entirely.
In any case, I found a pet store nearby that I think is a chain called Animal Kingdom USA and I must say that the fish there looked fabulous. I saw two dead fish out of hundreds and none that looked at all ill. They also were the only place I found that carried Biospira, which I did purchase today (cross your fingers that it works).
My two remaining neons will be happy to get a few more friends but I want to wait until the
ammonia is at zero or close to it. Hopefully by morning the tank will be cycled and I can get a few more. I have no way to quarantine any new fish, as I only have the one tank, unless there is a way to do that in the tank. It is only 10 gallons, though.