I don't have a $400.00 Scotty, but I do have a $379.00 Scotty (Newport Select M2). Like someone mentioned I don't see the difference in spending $400.00 on a driver or a putter, both clubs are used the most out of all the clubs in the bag.
I've said this before and I'll say it again. You will not lower your scores with changing equipment. We have a guy in our group (8 capper) who has some of the oldest equipment of anyone in the group. Old TM R7 driver, old Ben Hogan irons someone gave him, old Ping putter etc.. Most of his bag in full of other guys rejects.
With my Scotty I did change the $39.00 Matador grip. It appears to be made by Winn and I do not like Winn grips (can't clean them with soap and water). Anyway, do I putt better with the Scotty? Hell no. But my scores were the same when I played Tour Edge ironwoods and a 350cc Cobra driver.