Well, while the Zoom pedal are cheap and all, I would definately check out some other stuff too, like Boss and Digitech. There are a lot of different brands out there who make those little multi fx pedals, the best thing to do would be to try a couple of them, and compare them. You can easily find prices, user reviews, and info on gear online too.
I do wonder why your local guitar shops can't just order one piece at a time. Sounds to me like they are just too lazy, or don't want to bother, ordering a cheap piece of gear like that.
If you want to buy something online, check out
http://www.musiciansfriend.comGreetz, TK