Another bug on this quest: If you DON'T pay the troll-toll, but DO pay Ruby to comfort him, then talk to the troll afterwards, he'll give you back all the money that you gave to Ruby, saying "here's the toll that you paid me" (paraphrasing). Two things wrong with this: 1, I didn't pay him, so he shouldn't have that money to give me, and 2, even if I did pay him, it would only have been 1000 gold, not 2050.
Also, when talking to Ruby, the dialogue says "Here's your money (150)", while actually giving her 2050 gold. Fair enough that's what she asked for, but the dialogue implies you only give her 150 gold, so that should probably be changed.