old microfiche 1984 M635 CSi euro gray market

I no longer have my M635 CSi but I do have the repair manual on fiche. The fiche containing parts info and the one for technical data are still available from at least one UK source but the repair manual (01 51 9 750 227 en) is NLA. How do I value the reader and fiche for this car? I have received a request to sell them. The repair manual fiche is labeled : 633 CSi - M6 - US and it does include instructions peculiar to the M635 CSi . The parts catalog is for 628CSi - M635 CSi, and the technical data ranges 315 - 745i. The reader is of the correct format (european) for these 9.5" by 7" microfiche sheets.

PH