That glitzy McMansion you've always wanted may finally be within reach. Or not. If nearly 3 years of home price declines historically low interest rates and a relentless media barrage of half-truths from the National Association of Realtors haven't been able to stabilize home prices it's doubtful a gimmicky used-car-style sales event will do the trick. Coldwell Banker one of the nation's largest real-estate brokerages launched a nationwide campaign last Friday to boost the flagging housing market. The 10-day sales event aims to close the gap between buyers and sellers by offering up to a 10% discount on listed ...