I bought one for my girlfriend who uses it for endometriosis pain for Christmas last year. We've only had it for a year but it works great. I use it sometimes for recovery as well (from gym) Altogether with shipping from Texas to Ontario it was around 300 CAD.

https://ireliev.com/product/therapeutic-wearable-system/

It's also wireless and very low profile. She wears it to work on days that are really bad endo-wise, and it's been a life changing purchase for us