I am selling one of my Sig P365s that mostly consists of upgraded parts,  It is new and has never  been shot. The FCU, magazines, and paperwork are all original. Here is a list of upgraded parts and price so you can see the value:

$900 Aftermarket Upgrades 

  • True Precision Axiom DLC Coated 9mm Optic Cut Slide ($400)
  • Trijicon HD XR Tritium Night Sights ($190)
  • True Precision DLC Coated 1/2x28 3.7" (before threading)Threaded Barrel ($200)
  • Icarus AIR Polymer w/Agency Arms Custom Stippling ($130)

$600 OEM Parts 

  • Original Sig P365 Slide Completion Kit ($99)
  • Original Sig P365 (FCU) Fire Control Unit w/ Flat Trigger ($350)
  • Original Three 17 Round Magazines ($150)

$950 Askimg Price for Everything