i feel that many didn't know the difference of between pencil commision and sketch commision.

your art is top notch so i guess it depends on the individual,taste and income.

i mean...if leonardo da vinci had just pencil art for sell im sure there would be all kindsa money flying around (not that i am saying you are him)...but i guess what im trying to say is if someone valued your art skills that much i would say that 50 is doable it all depends on quality and demand. But id say 40 and under with that sized paper, would be a bargain buy in general, but you use the word bargain for flee markets i guess

just my opinion, good luck