Just so you guys don't go back to Megatropolis and start diving for the voucher, I'll go ahead and tell you that it was a non-magic paper voucher, and by now it's dissolved into nothingness.

"So what's with that big wall of fire?" I asked the girl behind the counter.
"It was just a simple missunderstanding," she answered, without looking up from the newspaper. "I was just reading about it now. The Isle of Darkness city council hired some mages to set up a barrier in front of the botanical gardens. Unfortunately they weren't very specific in their request, so the mages created a barrier of fire. Before we could get them to take it down, they had already left, and with full payment for their services." She sighed and shook her head. "I really miss looking at the gardens during my lunch break. They had such strange and interesting flowers."
"Why did you guys pay them when they completely botched their assignment?" Araches asked.
"We paid them... before they actually got to work," she said, nervously biting her lip. "It seemed like a good idea at the time."
I wondered if being evil somehow affected a person's logic. These Canadians were constantly pwning themselves in the foot for no good reason.
"Do you think the mages had ulterior motives?" Araches asked, appearing very interested in the subject.
"I couldn't say," the girl replied. "I just... feel so lost now. So very, very lost..."