Garrett:
As other have stated most repairs are pretty simple. Rust is not. If this grill is a 2008 than the manifold will have wings on it that sit in slots on the right side frame. If it is a 2007, it won't have the wings, but a crossmember under the manifold. To change out the burner tubes, you have to remove the manifold from the firebox (2 bolts) and move it back after removing the valve knobs and trim piece over it (1 screw in back + 2 friction points on the front). Tubes will pull right out. Don't mess with the screws on the left side of the firebox where the tubes end. The burner tubes slide under them. Again, rust is the key. Check carefully around the bottoms of the left&right frame where the casters slide in. Also any place the bottom panel bolts to the sides and rear. I'd offer him $120 just to see if he bites and go up from there. On the plus side, it has the stainless steel grates and a side burner. Also it has e-w burners so you can add a rotisserie unlike the new n-s burner models. See if he will fire it all up for you except the one burner he says doesn't work.