To solve this as of now, USPS offers Sellers the option of walking their packages into the Post Office where USPS will manually weigh each package themselves for the seller. There they will offer the Seller the First Class shipping for the item if it is under 1 pound.
If they take into the PO to mail it, it will have to be 13 ounces or under. NOT up to 1 pound.
They were right, however, saying "there will not be an Ebay discount at the Post Office" - but they really should have said 'not an online discount at the PO'.
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"Nothing is obvious to the oblivious"