Over the last few weeks, I have become absolutely obsessed with EPC. I love the fact that MB makes this amazing resource available to us. Coming from the VW world, its really nice to be able to just pull up the PN for any item I might need on the car, almost instantaneously. I don't know how many hours I have wasted looking for PNs for my R32 or Passat!
Anyway... I wanted a place where I could collate Part Numbers, part availability, and price, so I started to compile a google docs spreadsheet for items I am planning to replace on my E420. In the spreadsheet, I have included links to screenshots from EPC for a given category, quantities of that part that are required, information on a given parts availability (if I have been able to verify), and the parts 'current' price on mboemparts.com.
I've found this pretty useful for repair planning and reference, so I thought you guys might be able to utilize as well.
Disclaimer: my car is a April 1994 build (1994 model), and has the mid-cycle M119 engine (old style thermostat). The list I have compiled is by no means complete, but I will continue to add as I dig further into the car. Let me know if you have any questions or feedback!