Print prices in the "Shop" have shipping costs already included. If you are ordering 3 or more prints, I have created a discount for you of $10. This reflects the savings to me in shipping more than one print! When you check out, be sure to enter "Discount" when asked for a promo code. This is good for at least through the end of the year.
I'm still working out this online selling thing, in fact the selling my art thing in general, so future prices may vary as costs be come clearer. Feedback on shipping options, packaging etc. are always welcome. Just send me a quick email at firstname.lastname@example.org. Thanks for your support!