I bought the Harbor Freight tire machine on sale for around $75 total. A few bucks for some threaded anchors and a drill bit to fasten it to my garage floor. I can remove it but never have in the five years or so since I bought it.
The tire bar that comes with the HF machine is pretty crude. It works but it has no plastic cover to protect your rims from scratching. If you don't mind scratching your (and your buddies' rims) you can use it. I bought a nicer Coates bar which cost me more than the HF changer, but it's worth it. It came with a bag of spare nylon protectors that fit over the business ends of the bar, to protect the rims.
For balancing I have two balancers.
One I made myself by following the instructions in the March 2004 issue of Motorcycle Consumer News. It's basically a pair of horizontal metal rails supported by PVC pipe. You put the axle through the wheel and it lays across the rails. If the rails are level, the wheel will roll along them and oscillate back and forth ending up with the heavy spot on the bottom. It sounds crude but it's actually very good. Most of the time I find the axle doesn't even roll, the wheel bearings spin around the stationary axle.
The other balancer I bought at
Harbor Freight. It works good too, but the shaft supplied with it was not straight, and I had to buy a precision 1/2" x 14" shaft from
McMaster-Carr (#6061K431, Hardened Precision Steel Shaft 1/2" OD, 14" Length, $7.74 Each). The straightness of the shaft in this style of balancer (well, the other style too, but your axles are usually straight) is critical to getting a perfect balance. Each 0.010" of runout of the shaft is equal to about an ounce of imbalance. A small price to pay to get perfect results.
So I don't fret about what the local shops want to charge for mounting tires. I would no more take a tire purchased elsewhere to my local shop than I would bring my own steak to a restaurant. If you don't like what they charge, do it yourself. Since I have four bikes and a few friends who ride I am pretty happy to make an investment which costs roughly what a set of tires costs, so I never have to pay anyone ever again to mount and balance my tires for me. And by the way I have had so-called professionals mis-balance my tires so bad you couldn't ride the bike over 50 mph, and that was with a very expensive computer spin balancer. The result is only as good as the operator.