Quite chuffed with myself today - just busted a dodgy dealer in GW4. The guy had bought four players for £1 from a club, while selling them eight players for over £6M. Only problem - the guys he sold were worth about £80k, total, and the guys he bought were all worth a lot more than £1.
He's gonna log back in to find himself short of around £7M.
Cheats don't prosper - it took me a while, but I will catch you.