I was wondering if this has already been suggered in the past years?

I think it would be amazing if we could be able to ''buy'' for 5fg the possibility to edit old posts in the Trading Grounds ONLY.
I know we can edit our posts for a couple days, but still!

Anyways, let's see!

The ability to edit posts (1st post only) in the trading grounds has recently been changed.
Refer to: http://forums.d2jsp.org/topic.php?t=71042066&f=28

Editing beyond this wont be implemented.