Try a few dealers for comparison. $1200 for an entire clutch job? seems fair to me. Parts are always cheaper than labor for this type of job. Good thing its not a 944. You'd be looking at 9-10 hours of labor (at what, $100/hr?) I would also think if you are worried about transportation to work, you really can't afford the additional time to "do it yourself". It's good to know one's limits