I know the thread on the gaming forum blew up and I'm not entirely sure why. Apparently this game is kinda controversial? Whatever, it's the first doujin game to hit Steam (although not the first to hit an American DD system...Rockin Android has a few games on lesser services like D2D.) Anyway, most doujin games are fairly straightforward retro-titles, but Recettear is much more indepth, a combo of an economic sim and an action dungeon crawler. As this review says, it doesn't QUITE pull off the balance due to some awkward design decisions, but it's still an interesting concept.
As much as I respect this game for busting the doujin market in the US wide open, the demo didn't impress me much at all. Maybe the full game is better.
I'll be honest, as someone who likes the game, if you didn't like the demo, you probably won't like the main game. Some of the other adventurers play quite a bit differently from Louie, but if you don't like adventuring in the first place, that's probably not going to help matters.
Yes, there's a patch that fixes a number of things, including ropers being roving death-bots who can 2-3 shot appropriately leveled and geared adventurers, and knights being unable to hurt anything, even ants. The patch updates the game to v1.106, and can be gotten here: www.carpefulgur.com/recettear/downloads.htm
If this review was done at/near release, you might not've had the patch, especially if you didn't know about it. The patch came out 3 days after release, and there's another in the works that mostly fixes rare crash issues.