It is just that Line X prices really vary. I could see quotes coming in anywhere from $250 to $1200 for both.
If it was me I think I'd roll the dice on DIY stuff before I spend $1200. https://www.amazon.com/Raptor-Urethane-Spray-Custom-Regulator/dp/B074KQLKMH/ref=sr_1_1_sspa?ie=UTF8&qid=1540472952&sr=8-1-spons&keywords=upol+raptor+liner+kit&psc=1
U-POL Raptor Black Urethane Spray-On Truck Bed Liner Kit w/FREE Custom Coat Spray Gun with Regulator, 4 Liters https://www.amazon.com/dp/B074KQLKMH/ref=cm_sw_r_cp_api_i_ERuFCb3113QJW
This would be it.
Grind it down, use some self etchings primer, bondo until it’s nice and some Bedliner like this