I have a Cefaly (US original version) that I bought November 2014 for $349 US plus one unused electrode with September 2017 expiration date. At first I thought it was helping me in that I was having fewer headaches but honestly not sure in the long run that it helped. It did work good for helping me sleep. After over 30 years of migraines I'm finally starting to have less of them and don't use the Cefaly anymore. Hate to throw it away. If someone would like to try it let me know. Would like $50 US plus you pay shipping. Let me know if you are interested. Maybe it will help you. Thanks.