Yea but even then that market is so strange you can’t predict it.
In 1 gdkp item could go for 100,000 gold (wotlk) and then in another raid it could go for 15k gold.
Your whole premise is wrong and has been proven wrong over and over.
Also gdkps don’t print any currency. They don’t make gold appear, I guess they do with the raid bosses and trash mobs dying, but we both know you weren’t talking about that.