You should also have icq bidders post there bid here. Most of the time icq offers are lower then what you might get from auctioning it off.
Alot of the time they icq there offers instead of posting it. B/c they know there is a good chance the item will sell for more in the auction then there offer..
If they posted the 500 mil offer in here there is a chance that someone would have placed a higher bid. And if noone bids higher. then you dont lose out anyway b/c u still have the 500 mill offer.