With 60% specialty copay its something around 3,000 I month I think. If you become part of their ambassador program they may offer to cover up to ~$16k of those costs per year. Doing that also requires some assistance from the health insurance program to cover it all in a certain way before Humira will cover anything. Took a lot of calls.
Other things I'd recommend: Dedicated medical fridge with internal temp monitors, remote infrared temp gauge to measure package on arrival.
Figures may be a tiny bit off here, going from memory.