Finding a pro-bono doctor was in the plans from the start, if I get it right. And the doctor should have never been in the $50,000 total. cit: "The cost just to book the OR for Ken's surgery is $50,000, and that doesn't include the surgery itself, nor any post-op medical expenses."
Yes that's insane. I also suggested about health tourism on the blog page. I think you may have the operation and after care - first world grade - in Turkey for ~50K. May be even lower.
