Of course it's not purely benevolent. Walmart is a business and this is a business move.

> A vial of analog insulin costs something like $6-7 to produce, probably less at Walmart scale. The distribution costs probably make the net cost somewhere still in the $7-10 range.

Don't forget the R&D costs of getting a generic drug approved and setting up the manufacturing. It may cost <$10 to produce at scale, but getting there isn't free.

Hopefully Walmart's pricing trends downward toward the $25/vial price of regular insulin.

Actually, I hope this move spurs more chain pharmacies to start developing their own analogs, furthering competition in the space. Race to the bottom would be great.