Not sure about the shot but a one months supply, 30 chemo pills, are almost 11,000 bucks through insurance. If you can find them direct from the supplier the same thing is only $150.
When I did 28 days of chemo with radiation I took two pills a day. When I went to pick up the pills pharmacy only gave me half the pills. I ask why not the whole 28 days worth? Said insurance doesn't allow it dont want you loosing or maybe damaging them. Said that first half of pills you have there in your hand is $10,000. That means my 28 days for just those chemo pills was $20,000. I don't recall what the radiation was or the 9 rounds of chemo infusion I did 4 months later.
But it's not cheap to get treated. Without insurance I'd been screwed.
So I wouldn't be surprised if your friends shot was in the 5-10k range.
Mac