Here's a question... If you don't have the money for a $375 fit, do you have the money for the changes they're going to suggest (up to and including frame replacement). It does sound like a very neat process, but you'll probably get more value right now out of something more basic.
I would definitely look at the $100-$150 fits from any number of reputable shops. They will put you on a trainer or dedicated fit machine and make fine-tuning changes that will definitely help you ride and feel better. They may suggest some new purchases, but it's up to you when/how to make those.
I've found most of the $50-$100 fit offerings to be standover height on the frame and saddle height (and maybe position if you're lucky). Not much better than you and a buddy can do yourself, and certainly not much more than a good LBS should have done when they sized you to sell you a bike in the first place.