Yes, it's a Chicago. I've had several, and I'd say they're good for $20.
I think most Wal-Marts aren't offering the Chicago/Dallas model right now, though. The current edition is the Seawolf/Conny--same electronics, in a different shell.
If you get one of these, I definitely recommend using silicone or some kind of sealant at the ends of the tubes that connect the wiring: Water is always getting into those tubes, and it can deep-six your sub when you're not expecting it. That's probably what sank this one, and I didn't want to dive into the pond (found it when the pond dried up).
Pros: If you do the prop mod, they've got good speed. Cons: It's a one-foot sub that turns like the Queen Mary.
The pools I've bottomed in are only about four or five feet--not very deep, I know--so I don't really know how deep would be pushing your luck with a Wally sub.
Restored Chicago's test drive (10 Meg, 8 seconds)
http://www.rcuvideos.com/view_video....d958f2d6b052c9