Where can I find an affordable gym that offers Aerobics early in the morning near Indianapolis IN?

I live west of indianapolis in a small town called Cloverdale. I am looking for a gym that offers Aerobic cles along with other fitness group cles. I live in cloverdale but work Near the Keystone Fashion in Indianapolis. I would like this gym to be open early in the morning, I have to be at work around and I want it to be fairly priced 30-40, preferably no start up fees. If anyone knows of a place and has actually taken the aerobics cles offered that are either fairly close to downtown Indy or the Keystone Fashion Mall I would definitely appreciate some reviews possibly on the cles themselves I would like to know how the instructors run their cl. For example if they run it like a drill Sergeant or something along those lines