Not sure what the cost is but hopefully other can share what it cost. I've read that the cost averages $200 to $500 per session. The Foundation for Peripheral Neuropathy has some good reference info about the treatment - https://www.foundationforpn.org/scrambler-therapy-for-treating-neuropathic-pain/.

There is also a good patient story from 2015 on the Mayo Cinic News Network.
-- Breaking Away From Pain With the Help of ‘The Scrambler’
https://newsnetwork.mayoclinic.org/discussion/breaking-away-from-the-pain-with-the-help-of-the-scrambler/