That's where selecting a shaper becomes YOUR job. It's so important to see a shaper's work, talk to him, and as Dave said, even surf with the guy if you can, to see if there's a good chance his boards will be magic for... you or not. People get off on saying, "My shaper..." Really? How well do you know "your shaper" and his work? What kind of relationship do you have?
What's a good price worth for giving a guy a shot? Your first board could be the one you pay the most for. If you're satisfied with his product, you'll be back, and the relationship goes on from there.
Also... shapers like feedback. Some will even call you a few months later just to get some. That's the beauty of it...