Question About Selling A 1999 China Yearbook On Ebay

I have recently started making boxlots of WW material that I have gotten from auctions that are not within my collecting interests. I have a 1999 PRC yearbook published by the Shenzhen Philately Company. Appears to be complete except it doesn't have a place for the Great Wall of China series that Stampworld says came out in 1999. Has the SS sheets and a sheet of the 50th anniversary stamps. I can't find another one to compare either on eBay or by doing a general Google search. The stamps catalogue around $75 (Stampworld valuation).

I'm wondering if it makes sense to list this as a separate lot on eBay (is this type of thing desirable) or should I just throw it in my next boxlot--these are the $21.50 Priority boxes and I sell them for $125 shipped.

I figure if it's worth $50-75 it would be worth selling it separately, otherwise into the boxlot it goes.

Any ideas of the desirability of this as a stand alone item?

Thanks,
Paulsonja

My experience of getting decent prices for very average Chinese stamps is that they're always worth selling separately from other countries.