well, if we do the maths, what do we save?
£420 per month is £5040 a year. Since they are talking for life, then you are talking what? average 60 years on it? From first becoming sexual active? That's £302,400 pp
So £302,400 for every person as preventative v £280,000 - £360,000 for the lifetime of each person diagnosed with HIV, which is one in 20?
Seems to me that it would cost a considerable amount more.
So from a cost pov, I reject her claim that it would save money.
From a health pov, is it worth the extra cost to protect people from hiv? Ideally, yes, people would use condoms but clearly they aren't. But would having the drugs cause more people to do without condoms? If we are then talking about gay men you have the possibility of gay men who are taking the drugs having sex with bi men who may or may not be then the bi men have sex with women who certainly don't have the protection of taking preventative drugs and what happens? And yes, would we see the virus mutate? I don't know.
I don't know. I think it's something that needs to be weighed up. Ideally, people should have free and unlimited access to condoms and be willing to use them. Perhaps massive campaigns and free availability of condoms?