Need to get Pain Relief

Hello my name is Derek Poppenhagen and I have Cerebral Palsy and have used forearm crutches for 48 years now. Because of this,  I have really bad ankle pain to the point  I can't walk or stand long at all anymore!! The spasticity in my legs has also caused lower back pain not to mention my neck and shoulders hurt from the years of crutches. I got a motorized chair but that seems to be making my neck, shoulders and back pain worse. I have found a device that called Denas PCM 6.
DENAS stands for Dynamic Electro Neuro Adaptive Stimulation. It has been out since the 70's and has been a huge success for pain RELIEF.  It has 24 different settings and can be used for many things. I have tried the Tens units which haven't been working well at all.
I found this website that sells them but I only get Disability and can't afford one so someone suggested I try GoFundMe.
I am needing to get the machine and the attachments that are for the targeted areas. The total cost for this is $1500.00. Go Fund Me has fees for setting this up so l have to add $175.00.
 Anyone who could help me out to raise this amount would be greatly appreciated. The website that sells these in the US,  out of Oregon. The name is Denas Pain Relief Store check them out!
https://denaspainrelifstore.com