I've looked through this and I can see that all of them broke rule, though. I will only punish two of them.
I will punish the gun dealer for the propblock and I will punish the Black Market Dealer for mass rdm. I would warn the Thief aswell but the SteamID you've provided is from another server, therefore I cannot do anything about that part because it could've been fake and not the actual player. I will get on soon and punish them both.
Thanks for making this report, feel free to ask if you have any further questions!