Assuming 1 login/day and 85k/year annual employee cost (practically a joke, especially in the Bay Area) and 250 work days/year, it comes out under 3 bps (0.03%) of the employee cost. Probably not crazy for two factor, vs distracting yourself from your actual business goals?

Shoot me an email at jesse@instant2fa.com — if you'd like to pitch it internally, I can work with you to find a price that works!