Dynojet is one brand out of X number of motorcycle dyno manufacturers

Here is their directory
http://www.dynojet.com/dyno_centers/motorcycle/index.aspx

For a basic dyno analysis, with no mechanical or tuning work performed, somewhere around $50 seems ball park. I suppose it could cost $75 or more due to market and availability conditions. If the operator was highly competent, I would be OK at $75, but that's just my slant on it.

It wouldn't hurt to talk to your local riders or riders groups and find out where the competent dyno operators are. A post at TRat to find a good dyno experience in your neighborhood may be useful too.