^ If you have a Google Smartphone or tablet I would recommend buying 101 Projects for your Porsche Boxster, it's a digital manual. It may be available on Apple Iphone/Ipad but I don't use any of that.
Or you can buy it for your Laptop and PC by going to
Google Books and you can access it wherever you have an internet connection.
The book lists prices of parts and estimated labor hours for each common and major repairs.
From oil change to shocks to IMS/clutch to top replacement, it's all covered.