track guys nickel and dime you to death
i saw my buddy get charged $120+ to swap tires - yea both tires were on the bike, but $120 for 15 mins of work is a lil insane
also cycle gear notoriously raises their tire swap prices if you dont buy the tire directly from them
I love how everyone thinks labor is free and the use of expensive equipment is also free...and the space that they use to change your tires is free...and the electricity and heat that they use must also be free.
You are using a $6000+ tire machine, a compressor powerful enough to run it (about $4k for something dependable), the tools required to do the swap including things like bike stands, and the accepting the risk for liability of working on someone elses bike.
Since I pit with the Pirelli vendor at our local series and help out there a bit, I can give you our point of view.
If you buy tires from us, the mount and balance is included in the purchase price (below list price).
If you bring me wheels its $25/wheel to change the tire which includes a tire disposal fee which we get charged ($9/tire) because, you know, disposal is also not free.
If you bring me a bike and expect me to change the tires, $100-$150 depending on the bike is very reasonable. *I* can change a set of tires that are on a bike in about 20 minutes and I have literally changed hundreds if not thousands of them. This assumes that I have the correct tools all laid out, that I have the correct pins for the stands, that there are spools on the bike, and that nothing is safety wired, stripped, or rounded. It also assumes that I have someone balancing one while I am still mounting the other and that there are no other distractions/demands on my time.
An hour is a more reasonable amount of time and that price is very cheap for it when you factor in rent and utilities, consumables (tire lube, wheel weights, rubber gloves, cleaner, paper towels), disposables (tire disposal fee), and the actual cost of labor.