From the blurb it seems like it will be collectible
I found this on EN World:
This is not a collectible game like Dragon Dice or Spell Fire.
Inn-Fighting is a stand alone dice and card game like Three Dragon Ante. You can play it on its own as a beer and pretzels game or you could incorporate it into RP sessions as something PC would play in a tavern.
BTE we Three Dragon Ante is a fun game and we have sold a lot of copies (it's even won some awards).
I've played it a few times during the playtesting period and had a blast everytime.
Yep, it's not collectible. I helped playtest it a bit and it was a lot of fun. It's definitely more adversarial than Three Dragon Ante, too. It is themed around a tavern brawl, after all...
I can definitely see it being the kind of game you play while you sit around with your buddies and socialize. Kind of reminds me of Uno or Munchkin in that you kind of form alliances or develop enemies over the course of the game, and of course those enemies and alliances shift many times before the game ends.
Mike Mearls (on Dragon Dice)
IIRC, Dragon Dice's downfall wasn't a lack of interest. The game initially sold well. I've been told by various people connected to TSR back in the day that the company interpreted the initial success as signs of the next Magic, ordered over a million dice, and found that demand didn't really go up any over the initial wave of success.