No, it's not something you can see inRP. Don't talk about it in an RP sense, especially in local or system chat.
However, piracy negotiations about pricing tend to be about "how much money the trader will make" etc.
A lower-ranked player does use the "I don't have any money" excuse you can believe him ooRPly and base your RP on that; if he is level 90 you can RP that you think that he simply doesn't want to pay you so make with the shooting.