https://medicalxpress.com/news/2017-04-sci-fi-cancer-therapy-brain-tumors.html
Cost: $21,000 a month US. 5 year survival rate, 13% V chemo, 5%.
So you go from one chance in 20 of surviving 5 years to one chance in 8 of surviving 5 years. All that for the modest price of $700 per day. $1.2 million spent in those 5 years.