I use one that was $70 from eBay. There have been absolutely zero problems with it from the last few months of multiple times daily use by multiple people. You can get a very nice Vaporbrothers for $140. Both that I just mentioned are the 'cannon' design, meaning they look like THIS. Vaporizers are definitely worth it - they take less herb to get you where you want to be, so it conserves your supply, it's much healthier for your lungs, etc!

What is your price range?