Re: Paying for testing?
our affiliation is non profit making. Determine whether the sensei is making personal money out of it (which I personally don't agree with unless they are full time instructors, in which case they have to eat!)
However, your only real choices are i. pay the money, ii. don't grade or leave the dojo) or iii. complain about the cost.
Is there any subsidy for people who are juniors/students/unemployed at your dojo? I hope aikido doesn't go the way some karate clubs went for a while - instructors waiting to get to black belt so they could set up their own school and make lots of profit themselves!
You could always ask what the $30 pays for.