I am looking for a site or a person who has access to a surplus of this edition. I have googled and Inquired but it seems they can only be purchased in 10 copies or less. I am looking for a serious amount, probably a few hundred.
There is one up for bid on eBay for $3.99.
Sorry for my last post. I totally misread your original query. You might want to try pastpaper.com They have many NatGeos in stock.
Contact the following dealers on eBay and inquire as to their inventory (and whether they know of other dealers that may have them):
It's a start... they may have inventory they haven't listed and may be willing to sell them in bulk.