I've been collecting Disney World stuff from the opening days, but I had never seen this EXACT map in this format. It's much smaller than the poster park maps sold in the early 70's. I checked the ticket book pricing and sure enough, it matches up with '71-'72. Plus, your copy has the original Florida banner at the top of the logo. But I seemed to remember seeing the art before, and after a little digging, I found
similar art in the 1978 edition of the Walt Disney World Commemorative souvenir book- that's the one with the black, die cut cover showing the construction of the park and the hotels. However, the art in the 78 edition is much more detailed although
similar. This image is approx 13 1/2" by 11" tall but double trucked so it's difficult to really photograph the entire image.
The map you have seems to have eliminated a lot of the details and features
OR did they add details for the book art like the Space Mountain image? At any rate, I have never seen your map before and didn't even know it existed.
The map you mentioned costing $100,000's is, as previously mentioned, artwork that originally hung in each room of the Contemporary and Polynesian hotels. It is printed on masonite panels and measures 5 feet by 4 feet. During the first rehab of the hotel rooms, these maps were ripped off the walls and thrown into scrap heaps. Later, someone went through the piles and took the bulk of the unbroken ones to the cast member store where they were sold as "Masonite Panels- $5.00"! A few CM's went through the panels and picked some of the least damaged ones to keep for themselves, other fans and collectors. That was somewhere around '88 I think, maybe a year earlier or later. Word spread through the collector community and the $5.00 panels began selling for $250 and above. They did pose a unique problem though in that the only carrier that would take them was Greyhound Bus Co. I guess common carriers would have carried them, but not sure I would have trusted them to deliver it intact. To insure safe delivery, the maps were usually shipped in home made crates.
I too have seen them on eBay offered at super high prices, but I've never seen one sell. Admittedly, I'm not on eBay very often though.
Back to your original question,
"How much is it worth?" I would think if you find the right active collector, maybe $50 to $75, depending on the condition. That's my best guess, and I hope all this has been some help to you...