Not any more, unless something has recently opened
. However with that said I don't really venture out to the shops much anymore, as I usually only use them to buy tools and stuff.
Here are the shops I go to when I do venture:
Southwest corner of Rural and Guadalupe (Far west side of the Goodwill complex); Mostly an RC place, but they do have other things too
Northwest corner of Southern and Mill (It in the strip with Red Devil Pizza, and the Adam and Eve store); These guys have lots of plastic models, a good selection of tools, and some slot stuff too.
Hobby Town USA:
Southwest corner of Baseline and Gilbert (They recently moved so can't say for sure what part of the complex they are in); They have a little bit of everything including some slot stuff.
Also I should note there is supposed to be a place out in Chandler called "Cline Hobbies". I have never been there nor do I know of their exact location, but I do know of the guy who would be running it. There should be a mix of stuff there including a bit of H.O. stuff.
A final note, I live in Mesa and have a track that is setup all the time. So if your interested in seeing what kind of racing stuff we do, and our tracks hit me a pm and we will see what we can work out.