Having spoken to a guardian on duty it was suggested that I explain the circumstances of a trade deal here to avoid any possible repercussions.

Rockbo wished to sell a Wheel of Intoxication for 40 silver, which I wished to buy. However, this was Rockbo's first time trading, and he mistakenly gave me the wheel and 40 silver, while I gave him 40 silver. When the notification came, I noticed his error and informed him of it. I then suggested that he trades me another item he didn't want (in this case a Charm of Bravery) and I would give him 40 silver plus the item value (a total of 43 silver inthis case)

I thought this was the fairest way to resolve the initial mistake, and he was very happy with my honesty and the final outcome.

Please do not punish either of us, as this was an honest mistake on Rockbo's behalf, and was resolved in a fair manner and with the agreement of both parties.

Thanks :)