Quoted from arcadenerd925:

What the above posters said.
RS is a fun game, however, when they come up for sale in the bay area I've noticed they tend to sit for quite a while. There was one for sale in Sac for $3,500 firm on CL that sat on there for months (I doubt they sold it, so it will probably pop up again). So for me, price would be key. If there are no obvious issues, I w CB ould probably pay $3,100 maybe $3,200 tops if its in fantastic shape. but that is me, I would check it out, play it and gauge your own comfort level.
Definitely play close attention to red and ted, some of their parts are nearly impossible to find, so I'd want them to be in good shape.