Cycle Gear, out here in AZ does mount/balance for $11.99 per tire. That's the best I've ever seen! When I lived in VA, I paid $31.50 per tire at my local Honda shop. Of course, these prices are for when you buy the tire from that shop. Cycle Gear charges somewhere around $25 per tire and Honda of Norfolk charges $45 per tire when you bring in your own tire.
Call around, and see if you can find a good deal. The place I almost had do my tires wanted $75 per tire! Just because I was buying the tires somewhere else. I don't want to give away which dealer this is because they may lose a sale, but I'll give ya a hint: It starts with an "A"... and ends with "rizona Motorsports." (BTW: I strongly recommend not buying from AZ Motorsports. Nothing! No bikes, no parts, not even fluids! They suck. Long story, that I'd be glad to share someother time.)
Just remember, just because it's cheap, doesn't mean they'll do a good job! Anyone from around where Joe lives know of a good shop??