I agree with Jenny, far fewer insurers are covering Exubera than insulin pens. Some insurers still have thoughts that it saves money to prescribe only syringes in vials (even though compliance is reduced significantly, thus increasing their risks for short-term emergencies including DKA, hypoglycemia which would wipe out any such savings, but I digress …).
In the interim, I would strongly suggest looking into a pre-filled syringe case as a low-cost alternative that enables you to carry your insulin dosage around with you even without a pen. Many Symlin users claim they use these because pens are not yet available (supposedly soon). A word of advice, however, is to draw a few extra units than you are likely to use, as you can always squirt some of the extra insulin out of the syringe before injecting, but cannot come up with extra if you need it otherwise!