How much would Electroconvulsive (aka Electroshock) therapy cost with no insurance?

I have severe ongoing depression. Every day is a long scratch on the wall, and I have become completely apathetic to everything I've ever enjoyed. I looked up ECT and it seems to be a plausible final resort. I'm not rich, but I do have money - and I will pay every dime it takes for treatment as long as the science is there (aka no Russo-Asian "alternative" therapies).