Are there specific fruiting cactus you're looking for? Or just trying to get a variety? I've noticed Wal-Mart and Home Depot carrying dragon fruit plants lately if that's one you're interested in.

@Nicholas C. - I'm looking for a variety. I've asked which cacti produce fruit and I get mixed responses. Some say a lot of them do, but not all of them taste good to the general public, and some say only a few cati fruit and that they all come from the same family. I've tried dragon fruit, prickly pear, and Peruvian apple before but that was long ago, and I recall liking them. I think any fruiting cactus would be nice though, hopefully what I don't eat will attract birds. I've tried one home depot and one Wal-Mart and they told me that they didn't have any fruiting cati. If possible, I'd love to know where you saw them specifically. I'll check out the other Wal-Marts and Home Depots in my area though, thanks.

Now I may be completely wrong here, but I think all cacti can fruit since fruiting is how seeds are produced and spread. However, I'm not sure if all of them are edible. The only cactus fruit I'm aware of that you can eat are tuna (prickly pear fruit) and dragon fruit.

I found the dragon fruit in the stores around where I live which is about 1.5 to 2 hours south of Tampa. In my experience asking store employees, especially in the large corperations, for plant information is usually a bad idea.

The Walmart in St. Augustine had a bunch of dragon fruit - keep looking!