Funny. My car is dead a few miles away and I am working on determining battery or starter. Seems like battery now (no crank, volts way low). Got a new battery on the way. Figured I would put it in regardless as I have no idea how old the old one is. Decided not to worry about getting the fancy Optima. My daughter's boyfriend works at Advanced Auto (to pay for his Camaro racecar - he is an engineering student at C State) and had one in stock.
Checked around on starter prices:
All were remanufacturs and do not include core charge
Performance Products catalog - $400 (Bosch)
Local good Porsche shop - $325 (Bosch)
Local Advanced Auto - $ 305 and wait a week (unknown rebuild)
Sunset Porsche in OR - $95 (Porsche OEM rebuild)
Sunset is awesome! According to thier database there are only two Porsche OEM rebuilds in the US dealer parts network. It pays to shop around.