This isn't another reprint or print on demand of the original material created by GDW back in the day. It appears that Uhrwerk Verlag (www.clockwork-publishing.com) purchased the rights to do a German translation of the game. Rather than stick with the somewhat stodgy mechanics and Anglo-centric background, they rewrote the rules using the Ubiquity system from Hollow Earth Expedition, and expanded the setting to be more Euro-friendly. It has been a critical and financial success in Germany, so they decided to offer it to the English-speaking masses.
The pledges don't seem too outrageous: $23 for the pdf as soon as it's ready / $53.00 for the hardcover. For an extra $20 you qualify for all the additional pdfs that are unlocked for the stretch goals. For those with discriminating tastes, there's a Faux-leather printing at $114 and a real leatherbound edition for $151. Both of those include pdf downloads and shipping.
Stretch goals are more attuned to additional pdf adventures, so the more successful the project is, the more valuable the $20 boost on the core rules pledges are. The only stretch goal that deviates is one at only 140% off the initial goal and that is a printed collection of all the pdf adventures as an add-on purchase to the pledge. Price of the print edition has yet to be determined.