I sold my nice but not perfect 1976 CB550F for just over $3,000 - If I was shopping, knowing what I know now about the cost of making these things nice and run well, $2,000 would be a no-brainer for that bike.
If the pipes are solid, tank is in good shape with original paint, nice original seat etc., and on top of all that it runs 'perfect' with only 12K miles on it? Great deal at $2,000 especially if you (like me) like this model of Honda. One of the best of the CB's ever, in both style and handling.