At the local Kinney Drug, they have, for $19.99 each, three items of interest: those emulators.
Two of them are joystick-shaped games which each have 5 Namco games on them. One has Pac-Man, Dig-Dug, Galaxian, and BOSCONIAN and RALLY-X! The other has Mappy, Xevious, Ms. Pac-man, Galaga, and one I can't think of at the moment.
Here's an image:
http://www.walmart.com/catalog/produ...00000000147630
The third has 25 Intellivision games, including Thin Ice, Thunder Castle, and Dungeon of Doom. No B-17 Bomber or Space Spartans, though.
Not bad for a retro collector. The only flaw is the fact that they do not have a normal RF connection.