I would say all stores here keep them in the little containers with a little bit of the water . Some stores change them 2x a week, some stores change when water is dirty. That is why most fish are sick. It sad because when inexperienced person buy betta a lot of them die.
Some stores are really bad you can see a lot of dead bettas, or even dying...pretty sad. I don't go to the pet store unless i am really have to. I also hate to see dogs. Some stores here have dogs from puppy mills. And if no one buy dog and if dog get bigger they just return them back to puppy mills. It just hole situation horrible, but nothing you can do.
I always walk my dog and look at the people windows and i wish everyone would have pet at home including betta of course lol. It sad animal world :(
I am glad your betta doing better.
I have very closed friend who's daughter actually in England right now, coming back soon. I love to travel to Europe. Would like to go to England. May be some days i will. I was in Germany and Czechoslovakia long time ago :)
It just amazing feeling when you go to different countries and see different culture.