Two thing I see from the pics, One, you're gonna need a new tire, the knobbies on the rear are almost completely worn off. This bike was probobly used extensively on the road.
TWO, and more of a concern is the pic of the rim. Is that a stress crack at the rightmost spoke nipple? If so, figure a new rim is in store for you!
It could just be dirt, but if not, I'd take the negative feedback and move on!
L8R
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"Life is not a journey to the grave with the intention of arriving safely in a pretty and well preserved body, but rather to skid in broadside, thoroughly used up, totally worn out, and loudly proclaiming, "WOW, What a Ride!" - unknown
"Your Bike Sucks" - Sky Yaeger