No.
Not because I think this is necessarily a bad idea
Just that:
A) it would create a world of drama.
b)people would start posting in S.A with things like “Jsp@pc said my item was worth 50fg and I sold but then found out they are selling for 51fg they scammed me 1fg”
C) there could be cases where actual low pc’s are given in hopes of getting items for less and which arguably would be an actual scam.
True, good points. I didn't think about that.