If you're going readymade, check out
www.templatemonster.com - THOUSANDS of templates. While we're an affiliate of them, I gave you the direct link as posting affiliate links in forums is not something I do.
I've purchased templates from them in the past and never had a problem. I do not have them do the custom colors etc (that starts to increase the price) but for a template out of the box it's reasonable.
If you're looking to go custom, you'd be looking for designers who are just starting out if you wish to keep in the $200 range. This can be good and bad. Gives them a good start, but it also means that you could be dealing with novices or kids working on the side and taking a VERY long time to get a design completed.
I had a company just recently who was offering custom designs for $250. I didn't want to do one on one of my sites and I wasn't planning to go live that month, so figured I'd just pass it off to them. Well here I am 3 months later, and sure I got a mockup (only after pestering) but I still don't have a design for approval yet and their response to contact is less than acceptable.
Today (yes, really Today) is their last deadline. If the project is not delivered by this afternoon (as agreed to by them on Friday), then the contract is terminated and the funds are refunded. I'm too long delaying a project becaues they are "sick", "school", "family", "death in family", "designer sick", "computer crash", "host problems" or any of the other excuses that have been pushed through.
At the end of the day, the old adage remains true - you get what you paid for. Too bad this guy not only loses MY business, but any business from the clients I would have referred to him with.