Edit: We now have a BUDGET $1 SHIPPING option if you are just ordering decals.
My original reply:
Sorry, we don't use USPS unless we have to (like to get stuff to miltary addresses). After many years in this business, we choose to send things by trackable means, to prevent questions about delivery or wayward packages. UPS packages are all tracked and insured. USPS ones are neither. It prevents a lot of headaches for us and the customers.
It's obviously a little expensive if you are only buying a decal. Just get some shifter bushings or a Hyper Rev mag or something (it's a big site, there's got to be something else you need!) The shipping cost will be about the same, and then it'll be spread out over more stuff so it won't seem so bad.