We've added additional punishment (bans) for stolen designs if they are posted in shops. Thank you to the user who pointed out that our punishments still made it "worth stealing". ;)
EDIT:
This isn't referring to "stealing" 1T$ designs that someone posts - there's nothing against the rules about that. EVERYONE is eligible to purchase all designs posted in shops. This is referring to a shop owner taking a design another user made and selling it in their shop without permission.