You make me nervous saying, "full suspension" and "Wal-mart" in the same sentence. I agree with Grant that you should definitely look at dedicated folding bikes if that's what you're looking for.
Folding Bikes by Citizen Bike | About Citizen Bike and our Folding Bikes
I just came upon those in a google search. I'm not sure on the quality, but it's probably better than a Walmart bike. Several frame styles and option packs to fit your needs.
Edit: That is a really attractive price for the Tokyo ($170). I'm going to have to do some research on one for myself. Could be great for Amtrak trips.