Filed under: Back Bay PriceSpotter By Tom Acitelli@tomacitelli Mar 22, 2012, 12:05pm EDT How much is a 2-BR, 2.5-BA duplex condo on Beacon Street in Back Bay worth? It's got two parking spaces, one of which is free for two years(!), central air and a $26K price-chop already. [Curbed Boston]