You are not listening. I didn't say have your dealer call 1-800-FOR-MERCedes. That which is available can be had in one to two days. Many things are out of print. Those that are out of print are now unavailable except maybe through ebay.
Most manuals that are out of print have been collated to the CDs, which are the real value.
Bosch Master, ASE Master, L1
33 years MB technician