Piece of junk? Ahem. *gets on soapbox* Massive success using the maximum amount of gas = 2d12x2 damage. Potential 48 damage points right there, and if the enemy was weak to slashing that would be 2d14x2 or 56 damage points, and then it becomes a standard blunt weapon when there's no gas. :3 Or to put it another way, you won't be seeing damage that high on another weapon until endgame, if at all. ^^ And yeah, gas is a possible find. If you're lucky you might get a chance at another chainsaw a little later on. If you're unlucky... well... *cackles, taps fingertips together*
Anyway, recapping actions so my post isn't just hinting at horrible deaths that may or may not be waiting for you in the future:
Krath is giving his Blitz Rapier a +1 to Hit Rolls and trading his gold for a Light Shield for +1 defense. Then he's practicing swordsmanship.
Grimmjow6th is heading to the inn, where he'll encounter Draignean (unless Malakai leaves or something) and get informed on the situation.
Zako is grabbing a +1 to Damage Rolls Warhammer, +1 Defense no penalties Scale Armor, and a Light Shield for +1 defense, then go looting.
IronyOwl is upgrading the Vampiric Cutlass to +1 to Damage Rolls an then going looting with Zako, possibly leading to "Ooooh Mr. Daniel" :p. (Sorry, sorry, that may come off as mean-spirited. I'm just joking, as usual. ^^)
Ahra is trading the Ruby for the Rifle Subweapon.