I finally saw those horrid mini-betta cups that others board members have seen in pet stores.
I was visiting my adult kidlets in our home state - NH - and we stopped by my (formerly) favorite pet store. The betta were in those mini-cups - about the size of a 'hoodsie' ice cream cup. The larger bettas were lying curled up in the bottom of the cups, because they couldn't stretch out full-length. >:(
The regular aquarium tanks were horribly overstocked and had dead fish in them.
A new pet store opened up down the road from them, so we checked it out. Apparently, both stores had the same supplier, because they carried the same breeds of fish, and bettas in the same tiny cups.
Needless to say, if I still lived up there, I would not be doing business with those pet stores!