I believe that depends on where you live in the U.S. It should be under $2 though. I switched my auctions from $2 shipping to exact since usually it's more than I charge and I end up losing some of my own physical cash.
it's exact shipping. you tell me how you want it shippped and that's how I will charge you. So you still pay postage at the least. up the credits enough I will give free shipping :)