So you don't think that UPS undercuts our pricing? Happens all the time. One example I can give you is John Deere. Their contract expires every 5 years I believe, and when it does FedEx sends a team of sales people in to try to negotiate a new one as it is a lot of Int'l/large/priority/FO/SAT shipping. They take our proposal to UPS and say "Beat it" which UPS then does. They screwed us after the UPS strike in '97 after we were bringing in 2 additional planes just for them, we went on good faith that they would continue to ship with us, but shortly after the strike ended they moved most of their volume back to UPS. They still ship enough with us to get a decent discount and keep us on the hook, but ship far more with UPS. Coincidence that they are both union companies and basically use us as a bargaining tool? I don't know.....
Also, Amazon ships a lot of Saturday, a surcharge for which we don't discount, only the base shipping charges.
Fedex fumbled the john deere account. I wasn't around at the time but I heard they screwed up pretty bad so they came back to us.