The parts list is a free download from Porsche.
It's a pdf file so needs no odd resolution to view, at least on a Mac (maybe Brett is referring to the software from Porsche which includes prices?).
Much more useful electronically than on paper, as you can search eg by part number (or just fragment of number) or description (eg you know you're looking for a particular vacuum actuator so just type in "vacuum" and you get a list of all such actuators. Clickiung on each takes you straight to relevant page/diagram.
I often print out the drawing of a particular part to check order of nuts, washers etc but 99% of the time I'm viewing it on the computer.
Recently I've seen a few complete sets of manuals go for around £150 on eBay. The wsm is flawed - loads of detail in some areas, frustratingly little or none in others - so again I'm happy to have a CD version to browse through. If I really need particular pages in garage then I'll print them out. The best versions compiled by Jim Morehouse are sold in the UK by John Speake. Very high quality scans and many technical bulletins included, as well as the all-important wiring diagrams. many owners like to have printed and electronic versions depending on what they need them for.
If you want to know the opc price just type the number in on the Design911 site. It only takes first 8 digits but it's easy to spot part you want from the list of matching items it returns.
http://www.design911.co.uk/pages/fastPartFinder.aspx