Depending on the class I teach, it’s $22.50 or $25.00. Also a free membership, and I don’t have to pay for CPR and AED. For mandatory meetings and similar stuff, there is an established hourly rate which is around $19.00.
However, there is one big benefit for me because I have my onw business as a personal trainer and have my own studio. I cannot count the number of clients I got through the exposure I get as a group exercise instructor. However, I limit the number of classes I teach so not to interfere with my ‘real’ job.