The Radio Shack name obviously has a stigma attached to it. But honestly, a couple of their 'higher-end' mics ARE made by Shure. That said, I don't know what RS is charging for mics these days, but you could likely do better buying the low-end offering from a respected mic manufacturer.
I'd like to plug the CAD22 from CAD (obviously). You can get them for $30 a piece (sometimes less) if you buy more than one. I have 4, and use them in many applications. They sound good on toms, and make decent live mics for vox (perhaps not lead vox) and instrument miking. They're far from amazing, but they're rugged and cheap and very usable. I bought 2 when I first started recording (the only real mics I had at the time), and still use them today.