The item above is brand new in the original box

Shipping Services: Ground service, Continental United State.s only. 

Dock comes with original OEM 130W power supply and a USB-C to USB adaptor.  Everything you need to start using it.  Lots of the other Ebayers selling a dock and nothing else with many listings-wait till you see the price on a 130W OEM power supply-it might be more than the dock in some cases.  Compare auctions that offer both a DELL dock and an OEM power supply.