It's about $80/vial, depending on where you go, and your location. Costco and Sam's Club generally has the best pharmacy prices, and you DO NOT need to be a member to use their pharmacy. (When you enter, just tell them you're there for the pharmacy, and you don't need to show a membership card). It's the law.
You can get a guesstimate at this site, http://yourrxcard.agelity.com/yourrx...ugpricing.aspx , where I think they might even have a feature to enter your zip code to get local price comparisons. Of course, you can call any pharmacy and ask for the price, as price shopping with drugs is very common now. It's amazing how a 2 minute drive to a different pharmacy can save you a bundle of money.
My insurance company doesn't cover it yet, either -- just Lantus, which is priced about $3/vial lower than Levemir. I'm sure things will change in 6-12 months, once the drug is seen as useful.
If you want the FLEXPEN, you can expect to pay about $145 for a box of five pens (1500 units), compared to $80 for a vial (1000 units). You can decide which is a better deal. I like vials because when I'm sleepy, I might accidentally inject with the wrong pen, despite the color coding... so I use vials for my basal stuff!