If you don’t feel comfortable with designing shapes and mixing colors (don’t feel bad, most of us don’t), there are a couple of options you can explore to get a high quality logo with a small budget.

These options go from DIY to professional level design.

You might want to explore each one of them, and choose the one you feel comfortable with.
LogoYes – DIY
HP Logomaker – DIY
E-Lance – Freelance Design
oDesk – Freelance Design
CrowdSpring – Crowdsourcing

With these services you’re bound to get a decent logo that matches your expectations.