What should I do?

That was one of my questions where is the tach. I thought 500 for a complete dash with a tach all the switches gauges and wiring harness was worth $500

Based on ONE photo?? Please tell me you requested additional photos. I'm not defending the seller at all because it sounds like there may have been a little dishonesty, but if I'm spending $500 on a "complete" dash, I'd sure as hell better see at least 5-6 photos of it before pulling the trigger.