Are these standard sizes? Will they fit in a priority mail box?
I don't know the answer to that question.
But I do know that I scheduled a pickup at my house for the Post Office at USPS - The United States Postal Service (U.S. Postal Service)
and set it up being 1 lb (I guessed) which cost $4.10 and marked PRIORITY on the box and they took it. They even left me a THANK YOU note! My mailman has NEVER done that before.
epicfish, let us know how it works for you.
I have no clue what they would say at the clerks counter at the US Post Office. I assume it is fine.