about £350 for x 10 magnetic
£200 per session shockwave therapy
depends where your are based?
this link is the best i have found.
Bauerfeind AG-RhizoLoc® - Stabilizing orthosis for stabilization of the thumb saddle and first metacarpophalangeal joints is the best company i know of and even they dont do a playing support because its too dangerous to play unless full united. can take 6-12 weeks without the above therapies, might reduce by a third if lucky with therapies.