Nice low miles but absolutely insane price.
Not much purpose to a dually Suburban except probably some degree of increased towing capacity, I guess? You'd have to up the springs in the back too.
There's a much better deal on one over on duallyscene, $15K original asking price dropped to $9500 for a '97 with a big block and 115K miles, helper bags on rear, it's a 2WD. Black with a cowl hood.
Richard