Shy Fish purchase?

Hey here's a new one I have for you guys.



Ever since I got "Good" at the hobby, I've been very picky about my fish purchases. For my next purchase, I've been waiting for a Kole Tang, and have found one I've been watching. The fish has been at the store now a few weeks, with a few other fish, BUT, is extremely shy and hides in the rocks most of the time.



Has anyone purchased a Shy Fish and had luck or has it went sour with them?