I need to ship several big boxes (about 20x20x20"). Where are all these rumors about free boxes at UPS and FedEx coming from? They want $10-15 per box! After seeing Uline sells them for $2 apiece, I don't feel like paying %600 more. Is there any place to get boxes in Chicago that's not a UPS/Kinko/etc.? What do people do with all their used moving boxes?