my last trim was done at the Aveda Insitute for $18!!! Even though I'm relaxed, I can tell you this - Aveda is one of the best schools to go to for services and you won't be disappointed. My particular stylist asked me lots of questions before the one I was most impressed with was - are you in transition (growing out layers) and stretching your relaxer. I told her yes and she suggested a few things as far as the cut. Before she started cutting, the instructor came over and they discussed what she was going to be doing to my hair. She cut - exactly what I asked her to! The instructor was there the whole time, she inspected the cut when the stylist was done. She did a great job and I will continue to go back.
I've never seen results of services from Trade Secrets, so I can't help ya there.....