The EPC is something awesome for the DIYer who is very detail oriented and likes to have every nut and bolt on his Mercedes as it was originally.
you can look up parts with pictures and get the correct part number of the part you want specific to the VIN you type in there. It includes dozens of models, not just 123s.
Here is what I found on ebay. I do not know if this is legit. Maybe others can help us get these disks.