Thus any inbound mail piece would pay the First-Class rate, or the Priority Mail rate for items weighing more than 13 ounces.
Items that weighed over 13 ounces would be charged at First-Class rates.
mnli hypothesis: Items that weighed over 13 ounces would be charged at First-Class rates. premise: Thus any inbound mail piece would pay the First-Class rate, or the Priority Mail rate for items weighing more than 13 ounces.