Need a new pro-looking one.
If you have access to a good musical instrument store, I highly recommend buying a ukelele (or any instrument) that you can actually get your hands and ears on first, rather than sight-unseen off the web.
My dad gets them imported from Hawaii. I don't know the name of the website, but he gets really cool ones. They're pretty expensive though. Good luck. :3
Probably eBay. Maybe even guitar center.