I'm very sorry to hear what you are going through. I would be very cautious and do a lot of research before seriously considering a SCS. I posted a reply to your question on the other thread about tDCS...I highly recommend considering this before something so invasive as a stimulator which does not have a good long term success rate (most fail within a few years in RSD patients) and can have some serious long term side effects and cause spread. Some people have had success with them...but it's not a decision to be made lightly when there are other options out there.
Many have also had success with ketamine, though it also has risks/side effects. But many have gone into remission with ketamine so that may be something to look into as well. But it is expensive.
With tDCS, I do it at home and the equipment cost only about $300. There are no side effects and it is very safe. It also targets the root cause of the condition vs. just trying to cover up the symptoms.
Everyone has to decide what is best for them when it comes to treatments and what risks they are willing to take. I just caution everyone to not make decisions out of desperation. Make sure you are 100% comfortable with any decision you make about treatment and the risks/benefits/chance of success of each.
For more information about tDCS, please read this thread:
http://neurotalk.psychcentral.com/thread160980.html