Just a quick note today that I stopped by AbeBooks and note that TOMBS:  A CHRONICLE OF LATTER-DAY TIMES OF EARTH is available at discounted prices as low as $8.69.  This is for the print edition and, while there’s shipping added to that, it still comes to less than $13.00 (in this particular case, $12.29 to be more exact) compared to a $14.95 list price.  Plus, of course, whatever shipping might be on that.
If interested, the AbeBooks page can be found by pressing here.  I don’t know if this is for a limited time (I also looked up THE TEARS OF ISIS but didn’t find similar discounts there, for instance), but if you’ve been considering possibly buying it, this one might be worth checking out now.