If you get a truck, that would be 100 for the truck, and the driver is most likely on the payroll already. Being a big enough shipper, you should get the loading equipment from UPs, if you don't have it already. Preload the goods, roll them on your truck, deliver them to depot and roll them of again. Or use pallets, if UPS is ok with that.

Getting the slots at the UPS depot might be tricky, so. It shouldn't be such a huge cost driver, so.