I've only backed one thing on Kickstarter, and it was very recently for Champions of Midguard. I got the expansions (which the KS was for), and added the base game as an option since I never had it. You're right, what initially started as a $40USD expansion kickstarted, ended up costing me around $190 CDN....which I kind of regret now........it all added up quickly.......adding in the base game, then a few of the cool upgraded components, upgraded neoprene player mat, shipping and converstion....jeez. It got out of hand quick
That being said, it was a game i've been looking into for a while, and I dont' back any and every game. I stayed away from Rising Sun and Gloomhaven, because I know it would never get played with my lifestyle and friends available to play with lol.