Surprisingly in a strong market, the apartment hasn't yet sold.

"They always know what the apartments around them have sold for, or the house up the block."

This year, the same apartment two floors lower sold for $580,000.

The apartments have 770 to 1,850 square feet of space and sell for $250,000 to $530,000.

The first 42 apartments to go on the block had all sold, he said.

In 2007, a 3-room apartment was selling for $70,000 to $100,000.

Similar apartments across the river would sell for at least twice that figure.

A few years ago a similar apartment would have sold for $125,000.

The apartment sold for about $10 million, the brokers said.

The apartment did not sell, and by June 2003, the price had dropped to $5.9 million.