I try and do the same. Used to be able to use the tire machine at work... then the boss went flipshit about it not being fair to the others that dont know how to use it (Im a school bus driver and have a background in mechanics.... the lead mech knows this, and allowed me to use the equipment from time to time). So, now Im on the hunt for a used rim clamp machine and a cheaper used balancer.... I refuse to pay someone $50 for mounting and balancing a tire, or $35 to do a half assed flat repair.... (and this is if you buy the tires with them...) I dont have a Discount locally, and the Big-O is just a bunch of bullshitters trying to upsell everything that you dont need....
with three trailers, a Jeep and the Daily Driver, I have a few tires to maintain.....