if you don't need both medications, pulmicort was the cheapest that me and my doctor found.
Advair diskus 250 was lasting two weeks for (4 puffs a day) and pulmicort for $15 more, had 200 doses and I was only using 2 a day because it was 400ug instead of 250.
The best is to go and ask a pharmicist to look up the prices for you.
I stopped using Advair, not because I didn't have insurance, but because it was killing me. So instead I took natural anti-inflammatories. I have a regimen of vitamin B5 (500 mg.), mullein extract, MSM and N-acetyl-cisteine. Guess what - they work better than Advair, are cheaper (even though not covered by insurance) and have no side effects. I also take Zyrtec (an over-the-counter antihistamine) or Benadryl. Advair has a good PR program, with side effects given short shrift.