Opinions on Apple MS hardware/software value (softcard / COBOL) TIA

["Don T. Bother-Me" <rartnam@mcleodusa.net>]

Thanks in advance for any assistance ...

I am interested in opinions anyone might have on the value of the following:

Microsoft Softcard (serial number 10847-3, included in the docs is the 
schematic for this card), the Softcard  User Manuals Volumes 1 and 2, 
in leather simulated vinyl covered loose-leaf binders (like new). Also 
included is the Microsoft COBOL-80 compiler and the complete Microsoft 
Documentation set for the compiler (this includes the Utility Software 
Manual, the Reference Manual, and the User's Guide). Also included are 
another documentation set for MS Basic-80 (which I am not sure if the 
code is in this stuff somewhere or not) and another documentation set 
for MS Fortran-80 but not the software (I did this to evaluate the 
Fortran and I never purchased the Fortran compiler). Also included is 
another book by an independent publisher entitled Using CP/M by 
Fernandez and Ashley (this is a self teaching guide).

8 diskettes (the originals are included) and 6 books + the Z-80 card.

I am planning on putting this up for auction later today and I don't 
know what to use as an opening bid value..

Who might the collectors for this stuff be?

Thanks
L8R/R