My main gripe with the RMT is the constant spam of /tell and friend invites. It borders on harassment having the same "person" messaging you multiple times within an hour with blahh blahh gil for sale bs.

I won't deny the fact that botting itself keeps some staple items like Shards at lower cost, but you could also consider prices adjusting across the board if all were provided by actual players. Botting exist in plenty of MMO's. What doesn't relate to all of them is the /tell nonsense. Seeing some dead 'toons' forming a URL for a website is off putting but far more acceptable than random PM/invite from some fuck that's not even at the keyboard. That is super annoying and disheartening since you personally cannot stop the constant onslaught outside of going /busy24sev.