Theav, Will the shop fit the bike to you?
Provided the frame fits generally, with standover and reach, will they dial it in for you at no extra cost - say swapping out a long stem for a shorter one or one with more rise? Will they work with you on saddle height and placement and other elements of fit?
While you can't always make a silk purse from a sow's ear, a bike that isn't "perfect" off the rack, but is in the ballpark, can be dialed in with minimal effort.