Selfish behaviour as displayed by exploit users makes players leave the game. No point in discussing this, I have seen it happen often enough. Of course, those cheaters couldn't care less - they're happy as long as they can feel superior ( l33t ), use whichever exploit to get an advantage, and betray the community.
Exploit users are a breed of players this community does not need. Also, there are rules.
For harming the community and violating the rules, those exploit users should be banned - temporarily in mild to moderate cases, permanent in severe cases. I consider posting replicated items for shards as severe.
Ban them. We don't want them, we don't need them.