My guess is that they would welcome overseas patients, but from reading other peoples posts, you need at least $80,000 US Dollars ( Eighty Thousand ) , just typed it twice so you know
$30k plus for your treatment and $50k just in case something goes awry with the chemo and you need intensive care.
But the advantage for overseas patients they dont have to deal with insurance companies , just write out the check or use your black Amex card and your away simple ! <- sorry for carcasm, but its sooo much cash.
My advice for you is start to lobby relevant peeople in your country ASAP.