Similac Advance with Iron is usually about $23 per large can. It lasts about a week.
Get online and get a free sample of similac....they will ask you to enter info about your baby's due date, and will start sending you gift certificates for $3, $4, and $10 off any similac item. HOWEVER:
You can get the Walmart brand "generic" equivalent for HALF the price, and it is just as good....it seems to dry out a little faster and clump, but is good anyway....and you don't need any coupons to get the great deal.
Talk to your pediatrician during your first visit with the baby, and ask if they can provide you with free formula. They usually get cases of formula from their reps.
Wipes are about $8 for a big box (with 4 bags inside).
Diapers, depending on the brand cost about 20 for a large box (over 100, depending on the size). Walmart is the cheapest. We pay $18 at walmart for 104 size 4 diapers, and it takes roughly 2 weeks to go through that many.
If you don't have insurance, you can take your baby to the health department in your county, and they will charge you on a sliding scale...according to your income.
If you have insurance, you will need to take your baby for a 6 week, 3 month, 6 month, 9 month, and one year checkup. On at least 3 of those meetings, your baby will have injections. They are free if you have insurance, but can cost a pretty penny if you don't have insurance.
I see some comments from other answerers who mention the price of delivery. Mine was $40,000 before insurance paid for it. I only paid $1000 plus a few visit copays. But I had an extremely complicated delivery. Pre-eclampsia...they tried to induce labor for 3 days, then I had partially collapsed lungs and a cesarean, and was in the hospital for 2 weeks in total.
Hope this helps!