I guess being in a competitve market area most of the shops here do offer a basic fit which was enough when I started cycling. Sure it wasn't measuring bone length or power output or flexibility or any of the myriad of other types of fits. I paid $40 for the same basic fit when I developed a knee problem and the shop I bought my bike from had gone out of business. This also included getting cleats fitting, insoles fitted, and my brakes moved in addition to the seat placement, stem, etc...

But again, used can be a good value but if you have family that rides take them with you so you know you are really getting bang for the buck.