$200 wont buy anything except conversions from the used market. That might be a good place to start for you? $350 gets you a new cheap bikesdirect.com bike with a decent/good frame and bad parts that you can upgrade later. There are some new bikes on ebay of similar price range and people seem to think they are similar quality to BD bikes or a bit worse, I'm not clear on the real facts of that. Any new bike you order online may need grease, it may need things tightened and wheels trued, and you will have to put some of it together yourself or have a shop do it. That is going to cost extra. Also consider price of lock and tools you may need.