You should try and get a look at the seats pads as well before you buy, although at $50 its worth it just for the covers. The compressed fibre pads often disintegrate and an orangey brown fibre dust under the back seat is a sign they are going. These are expensive to buy and impossible to repair if really gone.
Also the wire loops holding the listing wires on the pad are called hog rings. You usually just cut these off and fit new ones. You can buy hog ring pliers and hog rings at big hardware stores look in the wire fencing section.

John