[Problem] Editing posts in the Marketplace

[chinhchinh]

well the scam could work these way:
he changes the 30 silver to 30copper and add the line "Edit: Item Sold."

these way most people will think the only change was the Edit line. Becouse the forum doenst save different versions of post, there is no way to proove he also changed silver to copper

However, how does this person scam someone in-game?