I think you're not getting a lot of requests because the market isn't as high on them at the moment. The screen should be around $150 used (I have seen them cheaper), not sure about the plate holder. The shift light I would think around $50-$100 maybe. The starfighter front seat (or similar like we make) is around $160-$200 for a new one (exchanged so you'll have some cost around $100 for the core value). Then the header has your highest value. Not sure it's got enough to cover the difference unless it's brand new (which is around $1200 from Star Rider for the same thing). Eventually you might get a buyer at your current price but if you need to sell quickly you may need to lower it down some.