17k vs 29,5K? The same BB?

[Opuntia]

Does anyone know why one of these coaches is $12,500 more than the other? They both appear to be almost identical to me, but for the mileage and date of manufacture. They're posted on vintagebirds.com

1980 Wanderlodge FC35 RB Very desirable rear bath model with twin beds. 3208 Cat engine, Allison 4 spd transmission. 102,000 miles on coach. 3 roof airs, 3 Lp gas furnaces, 3 chassis heaters, ice machine and 12.5 diesel generator. 2 inverters, food processor, gas stove, microwave, built-in washer-dryer. Also has engine block heater and horton fan system. Back-up camera, Falcon tow bar included with sale. Coach runs great. All systems work except engine-powered Air Conditioning. Coach located in Chicago, IL. Asking $17,000. For more information, contact David Powell at 773-374-4730 or 312-659-3801 or contact via E-mail. Pictures 08/2014

1982 Wanderlodge FC35 3208 CAT diesel engine, 5-speed Allison transmission, 75K miles, 265 gal. fuel tank, 12.5 KW diesel generator, 3 roof airs, 1 on motor, 4 120V electric furnaces, 3 LP furnaces, 2 hot water heaters off motor, factory checkered plate roof deck, 3 roof storage bins, 6 mag wheels, like new tires, patio and window awnings, A&E screen room with privacy curtains, ceramic tile in bath and kitchen, side-by-side refrigerator/ice maker, large ice maker, on-board vacuum system, in-motion satellite, built-in computer desk, 2 flat screen TV's (32" and 17"), surround sound w/13 speakers, CD, DVD players, AM-FM radio, memory foam pads on twin beds, convection/microwave oven, space saver coffee maker and can opener, GPS system, gun safe, money safe, back-up TV camera and monitor, much more. Want more info or have questions? Call Jimmy Vaughn at 864-517-2966. Coach is in Greenville, SC and may be viewed by appt. PRICED TO SELL AT $29,500! Also can contact via E-mail. Pictures 06/2014