@toyamcknight - you can't bid beause you are not verified. Get verified and you should be able to bid. Also, you cannot use comma's in your bid - 1,250 credits should be 1250.
I will say shipping will be about 25.00..that's a rough estimate. I am not completely sure. It could be more or less. It could depend on your zip code. I may change shipping to free if the credits get to a place I would like to see them at. :)
FYI for future auctions with "exact shipping": Before you list, get the box it will ship in. Be able to tell bidders the height, width, length and weight of the package. That way they will be able to go to USPS and put in these numbers and get the exact shipping. for higher numbers, offer to split the shipping cost. Do you have Pay Pal? If not, consider getting signed up for it. Also, always ship with delivery confirmation (tracking). Good luck to you.