Well you can either go to usps.com and you can do the shipping calculator, you put in your zip code, then the zip code of whoever wants to know shipping, and it should ask you for the weight of it, then it will calculate the shipping for you, or you can take it to the post office and ask them.
If it's easier, and you don't mind, just give me your zip code and I can look it up myself. That above is just for if anyone else asks, or for any of your future auctions! =)