Escape from the Troll's Cave

Publisher Blurb:

You've wagged school and spent all day at the carnival and you've run out of money. You were wandering around a quiet area behind all the main rides when you came across a sign over an entrance that said 'Administration'. The sign had been crossed out and replaced with 'Troll's Cave - Admission Free'. You couldn't resist the temptation of a free ride, so you were lured inside.

Little did you know that this really was an administration area and not a ride at all. There's a troll at the exit that won't let you leave until you pay his toll, but you haven't got a cent to your name. You need to find some money and pay the troll to escape from his 'cave'.