I'd really like to see what all the tech specials can do, and what happens when you have full research. But at only 2000 or so even for grinding the final boss, that's just ridiculous. I'd have to grind final boss fifteen times just to get the final piece of the core tech tree, much less everything else. No thanks.
if you're going to make virtually indestructible glass balloons and a raging grind of a game, at least do the kindness of informing which upgrade tree helps most with glass.
Also, to the people complaining about the jumps "forcing" them to miss combos--no they don't. You can use down arrow to "stomp" out and shorten the jump, which you should almost always do in order to keep combos going. You should be able to make combos of 300-500 happen without too much difficulty.
so many complainers. Yes, the prices are a little steep, but the secret to the game isn't the scrolls: it's the missions which allow you higher combo scores. You're not going to get the hard badge until you've completed a few dozen missions at least, and those don't require much gold. Yeah, it'll take you a little longer than a couple hours to get the hard badge. That's as it should be.
As others have said, there's just way too much luck involved here. Almost everything depends on whether you get your builders/mages/recruits early, or not. And since you can't put more than 5 each in a deck, it's basically a crap shoot.
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We'll make the price lower in the next patch. You can also earn free commendations by participating and winning quests