Since you got very good results with Remicade, there's a good chance you'd have the same experience with Humira. And Abott labs has a Patient Assistance Program that brings Humira into the reach of those that would otherwise not be able to afford it. Additionally, many insurance companies cover Humira diferently than Remicade; for some Humira is cheaper, for others Remicade is cheaper. I fall in the Humira = cheaper category. My insurance considers Remicade a "medical treatment" just like going to the ER, or an outpatient surgery. Because of this, I would have to cover my deductible plus 15% of the total cost. Since Humira is dispensed as a drug at the pharmacy, and taken at home like any other drug, it falls under my prescription drug coverage: 38 bucks per month.
If TNF-A drugs have benefited you, I would spare no effort in an attempt to stay on it. Get on the phone, and don't hang up til you've found a solution for you to get the help you need.