I am very curious on how much Wal-mart makes selling fish. I can't believe it's that much.
Probably not much; however, if you can sell some fish for a few bucks they go nicely with a $100 tank and $60 stand...not to mention gravel, food, etc. that the consumer has to buy just to keep the fish.
It's like having a convenience store. They sell gas but make no profit worth speaking of. Let's say gas sells for $2.15 per gallon. The store makes about 2 cents per gallon profit (hard to feed the family on that). Selling gas is just something to draw in customers because if you drive a car you HAVE to have it. The customer comes inside and stocks up on cigarettes, lottery tickets, drinks and candy. That's where the profit comes from.
Same thing with fish and aquariums.