Can't tell you all the details (check the cancellation line thread) but you usually end up paying less using them then the scalper/re-sell.
Yes, you can take over at any time (after a minimum amount of time, I assume)
If we're not having fun, then why are we doing it?
These are DISCUSSION boards, not mutual admiration boards. Discussion only occurs when we are willing to hear what others are thinking, regardless of whether it is alignment to our own thoughts.