I don't know what the shipping is, and not applicable if you have a CW close enough to pick it up (but then pay taxes), but Makarios sells the 50A wired for $291.19, and CW @ 30% off their normal retail would be $303.79 + tax.
2013 Rockwood 8289WS
Mods: Central Vac, PI EMS-HW50C, 2025RV, (2) SCS225 Trojans, PD9260, Awning Remotes & LED Lights, Eliminators, External Water Filter,, Intellijacks
2008 RAM 3500 Cab&Chassis Hauler Bed, B&W Companion Hitch
All My Modifications are at this link: