I have been also using a TENS unit and order the 2" pads from Amazon or Ebay. With all the other things I have to get for my RSD in my fingers and palm/wrist it can get costly. I live in NY and my insurance doesn't cover most of what I need and I go to Hand therapy and purchase what I need sometimes if I can't get it anywhere and need it soon. Hope you all have a better evening as I am not a happy camper tonight.
My best to all of you and I joined this group a while ago but have not gotten many responses.