IMO one of the contributors to price variance is LOTs of folks don't know the difference between Raptor suspension and a lift. When a Raptor with modifications comes across the block, they think it's just like a lifted FX4 and don't assign any real value to those modifications.
I had my truck at the dealer a couple weeks ago so I could get my dipstick and a section of weather strip replaced. While I was waiting for them to finish, I was walking around one of their G2s.
The mouth breathing lot lizard comes over and asks me if I was interested in trading 'up'. I told him he wouldn't be able to give me what my truck is worth, which was met with the standard 'modifications aren't worth anything' response. I told him to eat shit.
My truck would sell for 60k or more on this forum but that's because people on here understand just how expensive it is to modify these trucks. To a dealer, its worth whatever blue book says, minus the ******** tax.