There are four units for sale right now in 497 Greenwich Street, including building designer Winka Dubbeldam's own condo. Perhaps the competition explains the pricing trouble with #7B, brought to our attention by a tipster. The place last sold for $3,182,106 in 2005 and was relisted in early 2011 for $5.75 million. (Perhaps its West Chin redesign occurred in the interim.) A few chops later, the price is now down to $4.795 million. You do hate to see that.