I'm not sure, but I recently snatched the domain adfeeling.com via Godaddy's domain backorder system. I probably was pretty ignorant on the whole thing now I read this story, but in the end, it all went pretty smooth and the costs were predictable.
I got back a friend's domain through GoDaddy's backorder system. He'd let it expire and someone else held it for a year. I tried to buy it from them for $100 but they wanted more. In the end, I got it for a $20 backorder fee.