Eryck,
The oil filters are only $10.00 in Australia.
It is a typical MB rip-off. They charge what they think they can get away with and mostly they do.
I hope your are not going to use them for servicing your car.
The classic centre do not charge anything for the copy of the data card.
You can buy an offical MB certficate of ownership. It has all the same data but is a fancy printout that you could have framed.
It looks good but....is it worth the money?
Bob Smith (Brisbane,Australia)
RHD,1967 early 250 SL, auto