For anyone who also thought that was a weird way to say the stat, it's £2,000 upfront and £4,000 a year for one person.

It does seem awfully high. Donating blood costs way less. Maybe the treatment they're saying the cost for is the drug rather than the bloodletting?

i assume they get a transfusion as well?

Would be unnecessary. They'd only be removing the plasma component. Either via plasmapheresis or a nearly identical procedure called plasma exchange.