Squid,
Mine was $332.10 with free shipping at XDP
DualLiner Truck Bed Protection System . Save yourself 70 bucks for something else
The air hitch came from HitchCrafters
Hitch Crafter - Air Ride Fifth Wheel . I also got with the unit the gooseneck plate so I can switch. Its not cheap at $2395.00, however is the best price in its class. The
Holland/Binkley king pin head is the best out there (in my opinion)
Hope that helps.
I also recommend a proportional braking controller like Brake Smart or Max Brake. The combination works so well, you will never go back to anything else. If you are interested, I have an extra unit new in the box (posting the forsale area).
Cheers,
Roberto