Not flaming you, just wanted to give you some more insight into whats involved in running a dyno day.
I went to the most recent ISMR dyno day - it was fun. I dont know for other people but i think $50 is a bit much for a dyno run. I say its expensive because there is many others paying for it as well so they would take in a decent amount of money on that day.
Yes i realise in the first post you said you would charge a discounted rate - the above is just my thoughts