<– worked for Schering-Plough for a few years back in the late 90s/early 2000s and four times a year I worked with the actual localized production cost vs wholesale cost vs government vs retail costs per country and….
… yeah. This is possible for nearly any drug out there, except perhaps for drugs that have to be grown in chicken eggs and stuff.
Once the R part of R&D is done, the D is creating it, perfecting it (longest part) then what’ left is mass production . When you’re at the mass production phase that’s when things get cheap.