Postage for 9x12 Envelope - Stamps Required, Cost
It means that a 1 oz 9×12 envelope Postage will cost you $0.60. The 2 Oz 9×12 envelope Postage will require 2 Forever Stamps and 1 additional Stamp which has a cost of $0.24 currently. so the total price for 2 oz 9×12 envelope postage will be $1.20+$0.24=$1.44 A 3 Oz 9×12 envelope will require 2 Forever Stamps and 2 additional ounce stamps.