I got PRP on a torn triceps tendon a few years ago and it saved me. (but cost $1000/inj and I got like 4 inj) In the US.
I just had PRP done in my shoulders in Mexico,he did both shoulders and charged me $100 every time I went. I went 5 week in a row. Feel much better.
He told me it would be $4k to stem cell one shoulder.