Hi, we use callus peel and it is absolutely brilliant!!!, if you are qualified in pedicures then your insurance should be fine. We charge £18 for our peel treatment and we allow up to 40 mins. In each sachet you get 2 good size patches although designed for the heels we also cut up the patches to address callus in other areas (toes, ball of the foot etc) 1 patch will go a long way.
We have always got our supplies from beauty select which I believe are the main supplying company, i wasnt aware you could get it anywhere else. The foot cream is also a good add on sale and again lasts well as a little of this also goes a long way.
HTH

Helen