I mentioned on another post that a cosmetology school is a great place to get a cheap haircut (ours charges $4). But there are other schools too that offer greatly discounted prices for their services.
I take advantage of a local massage school. A one-hour student massage is only $25. The typical professional one-hour massage is around $60. I have osteoarthritis in my spine (bone spurs) so my back hurts most of the time. Massages help keep me mobile but I just can't frequently afford $60 for an hour. So I'm a regular at the massage school. The instructor often runs specials and he makes sure to let me know when he does. So I recently stocked up on a "buy two, get one free" special. I bought 8 and got 4 free, which I'll use throughout the year.
Our local vocational school has an auto mechanics course and an auto body course. Back when I was in high school and college, I had to pay for my own vehicle repairs, and that's when I discovered the vocational school. Typically, the students, under supervision of the instructor, do the work for free; you just pay for the parts that are needed. They kept my vehicles going while I attended college. I even got one vehicle painted and since they used some old paint no one wanted, it didn't cost me a thing!
There are dental schools and some medical schools that have discounted services too. About 30 years ago, I saw doctors at a clinic that trained new physicians. Since it was an educational clinic, the services were very cheap. I had a procedure once in which my doctor used me as a training tool to teach a new physician the procedure. I was very nervous, never having had anything like this done before, but I relaxed as my doctor explained to the new physician (and to me) exactly what he was doing just before he did it. It was a wonderful learning experience for me as well.
So if you want to save money on services, check around for any schools in your area that provide services at a great discount. I've had great luck with the students I've encountered and I've saved a bundle.