By the looks of things you made a comment accusing someone of Manipulating. As you know this can't be done. It's been part of the Rules for years. So hence your post removal.
If you feel someone IS Manipulating and have " Proof " then as Tren says you can send it to Jagex via their [email protected] E-Mail address. They will check it out and do whats needed. Sadly nothing really can be done via the Forums. The F-Mods have no proof of any wrong doings and it's very hard for the team to prove anything untowards has happened. So because of that any accusations posted against anyone they can and often are removed for Naming and Shaming or Flaming. It just can't be done sorry and all that but thats the rules and has been for years. No one is picking on you. It's just the things you post just don't follow the rules and as such are removed. Hope you understand why.
Anyone quoting you also have their replies removed as that too is breaking the rules of naming and shaming or flaming.
If You or anyone else feels any Prices posted as fake or misleading then you have to do your own research. You could also after said research post your own Price Guide and keep it updated. After all it's all about Research. More you do the better deal someone may get and at a reasonable price and not ripped off.
So in a nutshell people including You just need to be careful how you word things and what you post. It can and often is reported and the team has no other choice but to remove any offending comments. Last thing We as a team want to do is stop progress and upset anyone. Were here to keep the peace and it is tricky at times to please everyone. Sadly some do get upset and sorry but thats not what were here for to upset anyone.
Hopefully we can all get along and move forward and reap the rewards we all work hard for within these forums when it comes to Discontinued items.