Except on my lard ass Goldwing, I don't remember the last time I paid someone to change a tire for me..
Get the equipment (Irons, valve core wrench, air source, stand and tools for the bike) and you only have to buy this equipment once.. The labor you pay after a couple of tires will have already paid for all the tools.. Just get the stuff and do it yourself.
Have someone who's done it a few times assist the first couple times and you'll be an old pro in no time flat..
Is it easier to sit in the waiting room at the dealership and drink coffee?? Yes, but what happens when you have a flat, or any issue out in the middle of no where, and you don't have a clue because you've never done it yourself??
Get the experience.. It's not difficult, and even if you're going slow, you can easily change a tire in an hour.. After some time, 1/2 hour will be a snap..
You can easily balance with the axle.. The tire will roll to the heavy spot.. Get some stick on weights and tape them to the other side until the tire stops anywhere, rather than one spot.. A quick bump off the floor to get a slight roll will tell you the heavy spot everytime..