The reputation stands, the user had a direct interaction with you, and even posted feedback in your thread for which I am unsure why @Hero & @Ahlwong...
If someone is quoting higher price than their thread or redirecting you to a different platform then report the thread with a screenshot of the chat...
Middleman since: April 13th, 2011
Marketplace minion since: April 18th, 2011
Runescape minion since: June 6th, 2011
Moderator since: September 28th, 2011
General Moderator since: November 2nd, 2011
Global Moderator since: April 29th, 2012
Super User since: November 1st, 2013