LOL, that GRM dude bought an autotragic, convertible, carrera 4? LOL man-card revoked!
Water pump job is fairly easy and under $100. Coil packs are also easy but they'll cost you few hundred. The AOS is a bitch, haven't seen that mentioned yet. If it cranks slow when it's really hot- will need the starter and/or starter cable done- bout $250 for that job. I could go on. If you're used to working on Audis, working on Porsches is a delight.
Anyone who's surprised when their $80k 15 year old car has deferred maintenance items needs to give it away and go back to their accord SPORT with the factory 18" blacked out wheels and nurbugring edition steering wheel and deviated-stitching lipstick holder.