That is a bunch of crap on Performance part. I started doing Ebay and looked hard into USPS. They offer a great deal for the money. With thier priority mail I could ship you a 4x6x8 block of lead(about 70 pounds) for less than $10. The ship box will fit most parts, I might even be able to cram a whole group into one(no built wheels
)
The problem with P.O. box can be ship size.