How about a parts page, whenever anyone gets any part they can fill in the details including their model/year, the part number, how much it was, where they got it and any obs they have on the the job if they fitted it themselves.
This would also build up a knowledge base of the jobs that can be done - if you're handy. I'd love to do a lot of these jobs myself, can do most 'ordinary' stuff - services, brakes etc but don't know what can and can't be done DIY with things like suspension.
Also if tools have to be bought (like pullers etc.) we could share them, or buy them between us if a few people need to do the same job around the same time.
It would be self updating as prices change and members update it.
Dave