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Old 08-23-2009, 07:39 PM
Chronos Chronos is offline
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Join Date: Jan 2000
Location: The Land of Cleves
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I don't know FedEx's business model specifically, but the USPS will not hold things back specifically for purpose of price discrimination. If there's still room on the truck (or plane, or ship, or whatever), and they've loaded all of the high-priority mail, they'll deliver some low-priority mail quickly, too. I've seen packages mailed at the lowest price arrive the literal next day after they were mailed. They just won't guarantee that kind of service for the cheap price. So if they do have a lot of high-priority packages going out that day, they'll hold back on the low-priority ones, and you don't have any reason to complain about it.