Yorin The Quick and Swift:
Yorin stared at the nervous man for a short while, but then perks up once her company decides it's time,"Awesome, adventure awaits for us, we shouldn't let her wait."
"Excellent, excellent-- if you'll just sign this paperwork... and there are some fees..."
The paperwork really does appear to be harmless. It mostly concerns
1. That the party can't get mad if they happen to not find treasure in the dungeon equal to nor exceeding what they paid to get in, and
2. That the party can't get mad at the dungeon company for any injuries or harm sustained by going into the dungeon-- basically stating that everyone is going in of their own free will.
The "fees" are going to eat up 3/4ths of the money the party has, though. Good thing you already sold that sword.