UES townhouse sales a market barometer

At least 15 Upper East Side townhouses are now on the market for more than $20 million. The cluster of ultra-luxury is not only fodder for real estate shop talk, but a closely watched barometer for the residential market as a whole. These townhouses include the one at 7 East 67th Street asking $34 million and one at 14-16 East 67th Street going for — ready? — $99,999,999. more [NYO]