> but my guess is that UPS is probably also doing the similar type of things to their customers as well. This isn't possible with UPS. They publish their regul

> but my guess is that UPS is probably also doing the similar type of things to their customers as well. This isn't possible with UPS. They publish their regular rates. If you're a large enough shipper, you'll have a contract that explicitly defines your rates and discount. This kind of thing is mostly useless for UPS. First, they notify you when they screw up. Second, they screw up maybe 1 out of a 1000 packages in my experience. That's a small enough number that it's absolutely worthless for a business to pursue. You're better off aggressively negotiating your rates.