If you will give me your zip code. I will look up the cheapest shipping that I can find and let you know what that will be. If you are okay with the price, I will change the shipping fee so you can bid. How does that sound?
To your zip code it would be $7.48 for priority (it's less than standard post). I accept paypal only because I use it to pay for the postage. USPS will not accept amazon gift card codes.
To your zip code, Standard Post and Priority Mail are the same rate $5.80, so I would ship priority because it comes with free tracking and free insurance.