When we had our first big horses, the farrier used to charge $20/horse. After getting into minis, I soon learned how to trim myself!
I have been trimminig my horses hooves ever since buying my first minis, back in '94. Last year, I messed up my back, and was the first time I had to pay someone else to trim my horses hooves. She came in, and trimmed a bunch...she was FAST, but in my opinion, sloppy! Seemed all she was worried about was getting in and getting done so she could move onto the next far, She came from about 4 hours away to this area, to get in as many horses as she could, so it was rush in, rush out. She charged $25/horse, and I was NOT impressed, and bad back or not, I decided I would do them myself, even if I had to do one here and one there, to get them done. This was a "professional" farrier, that went away to school for this too, not just some self-proclaimed farrier.