Question about listing something on Ebay

I just listed a PSA 10 Lou Whitaker RC. In the last two months, two of the same cards have sold for 480 and 520. Way over SMR. Should I state that in the info in the listing? Based on your experiences or observations, would listing that information help or hinder receiving a higher price for the card?
I collect PSA graded 1980-81 Basketball.
Successful transactions with bouwob, lifeshouldbefun, SDSportsFan, Bkritz, tsalems1, kwtoz, johnny1976, Topps29, Calaban7, nascar20, bking, bedellsonics, Beck6, Dialj, Echocanyon, mdkuom, gosteelers, artimus.
Successful transactions with bouwob, lifeshouldbefun, SDSportsFan, Bkritz, tsalems1, kwtoz, johnny1976, Topps29, Calaban7, nascar20, bking, bedellsonics, Beck6, Dialj, Echocanyon, mdkuom, gosteelers, artimus.
0
Comments
Smooth deals with: Beck6, hankcaddy, theorioles, ironmanfan, vitoco1972, shouldabeena10, bkritz, rajah424, bobbyw8469, aisavdbballinphilly, mphilking, bbcardcom, gameusedhoop, jake4pack, katscards, ndfan1, ronburgundy, tennesseebanker, wink, bigreddog, thethrill22, bosox1976, morgoth, swartz1, baseballfan, milbroco, brick, davidpuddy, akbarclone, rexvos, itzagoner, bottom9th, lbcoach20, sbtrailrider, bunker, hoofhearted, livi78
Successful transactions with bouwob, lifeshouldbefun, SDSportsFan, Bkritz, tsalems1, kwtoz, johnny1976, Topps29, Calaban7, nascar20, bking, bedellsonics, Beck6, Dialj, Echocanyon, mdkuom, gosteelers, artimus.