No dude with link stone at grand staircase

[zelazko 5]

When does this guy appear? I just gained access to grand staircase area and that rich neighborhood right after Coreny gym leader goes suicide. There is no guy that sells link stone but onlookers of the suicide guy. I talked to everyone and I have 10K money.

[Wolfox 2093]

it's after you beat Shelly

[seki108 1226]

He should appear in front of the Grand Staircase around that time, unless it was removed in Ep17.  I remember he was definitely there in EP 16 whenever you go down the ladder after Team Meteor.......or maybe when you come back up