I never had luck with insurance paying for Alimentum for us because it wasn't
prescription. They paid for Neocate, which is the next step (and by a
prescription). Do you qualify for WIC? We did for a short time when I wasn't
teaching and it was just my husband's income. That helped some. I would
definately ask for samples from your doctor or even call the company.  You
could also try calling Any Baby Can. They can sometimes help out with formula
intight situations.
Good luck,
Elaine