My Tysabri is $49,000/year. I qualify for $10 co-pays on the
Tysabri, and Biogen-Idec is chipping in $120/
infusion. My insurance company picks up all but the $4500 max out-of-pocket, so I'm still stuck for that. It's hard to squeeze that into my budget, but the Tysabri is working so well for me, I can't see stopping it, now.