Hi Wayne, I just checked on line with USPS these are the prices a box at 4 pounds and 3" in height,17"in length,17" width is 20.85 Shipped Ground priority is 23.15
. If the box is 3 pounds 3" height,18" length,18" width it's 20.00 ground or 17.35 priority..
Please let me know..
I think the post office will let me used a Pizza box
Mike