It looks like it has been built by arranging the discount high to low on CRC. You know the RRP, so I imagine you also know how much this actually cost you. That’s the starting point, then remember that it’s used and not exactly mass market.
Every potential buyer is going to remember when they saw the individual components at their cheapest. It doesn’t matter that they cost more now, they’ll still think they are being ripped off, if not actually.