Bought an account just over a week ago (not a review copy) to test as my old supplier's accounts started failing and he was blaming my campaigns. This worked completely and my old supplier has been binned. Easy process, practically just have to add campaigns and start running, the seller does the rest for you. Account is fine after a week of running (including 2 days of black hat ads), the campaigns are rocking again and the threshold is the highest I've ever managed to reach.