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How do I calculate how many stamps to use on a ReadyPost bubble mailer? I was told I could ship these across the country for under $5 each at the post office
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Amazon.com : Fuxury Kraft Bubble Mailer 4x8” 50Pack Strong Adhesion Padded Envelopes Thick Bubble Envelopes Usable Size 4x7" Waterproof Cushioned Bubble Mailers Packaging for Small Business #000 Yellow : Office Products
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