"God damn it! My arms... what's happening?!" she panicked. "Does anyone have any itch reliever???"
Gaunt's eye's lit up! Finally the chance at making a sale had arrived! He pulled the mysterious bottle of aftershave out of one of his pockets and waved his hand over it. The label on it seemed to change slightly.

"Itch reliever?" Gaunt asked. "Well not completely. This is actually mostly meant for burns I believe, but in a pinch would do for other kinds of irritation."

This was only a lie at face value. Gaunt's products strongly favored the placebo effect. If she wanted it to relieve her pain, it would. For someone else? Not so much.

"I'd be more than willing to give it to you." Gaunt then put on his most charming salesmen smile "I would only ask the small compensation of, say, 10 of these credits we've found."

The aftershave was completely worthless to him, and 10 credits was enough of a compensation so as to not seem outlandish and appear a bargain for the relief he was offering. Ordinarily he would add on a prank here, but there was no value in causing mischief (at least not with the information he had to work with), so he would settle for what he really needed: more supplies.

"What do you say my dear? Do we have a deal?"