Bought this “broken” ASUS ROG Swift 27” 144hz 1440p Monitor on eBay for $200. The seller couldn't get a signal on it. Turns out it wasn't broken, the seller just didn't know
Amazon.com: SoDo Tek TM 6 FT 3 Prong AC Power Cord Cable Plug for Compaq WF1907 19 inch Diagonal LCD Monitor : Electronics