Originally wanting $17k, they've made over $101k. So be sure to check out the upgrades and extras that've been unlocked.
From the campaign:
All right humans, this is your chance to own the 460-page hardcover compilation of all five of my systems-neutral Grimtooth’s Traps books – plus loads of extras! We’re talking 500+ traps and maybe me making a guest appearance in a Dungeon Crawl Classics crossover module. I’m Grimtooth the Troll, and I’ll be your guide on this Kickstarter tour, so gird your loins, get your dice and let me tell you a tale…