Amber I bought 3 vaults during the sale and Saturday / Sunday I came across a guy who had used some gold but clearly was cheating. I was pissed to see that whatever I do with 3 vaults wouldn't let me crack through his BS cheating defense so I am with you 100%. Yes I have invested a good deal of money into this game and I will hold off on purchasing any more real money items until I see that something has been done to deal with it.
One suggestion would be for Funzio to run a query to report back to them every player who has greater than 500 of any item other than explosives. I posted on this guy's wall yesterday "I can understand if you decided to stock up on 11000 land mines + 14000 Napalm but what would possess you to buy 1500 Tasers and 5000 Golden Magnums?" Those types of numbers should be very easy to weed out, reset and impose some kind of ban, reset or punishment that is meaningful.