Existing-home sales were sharply lower in July following expiration of the home buyer tax credit but home prices continued to gain, according to the National Association of EALTORS® www.realtor.org , which are completed transactions that include single-family, townhomes, condominiums , and co-ops, dropped 27.2 percent to a seasonally adjusted annual rate of 3.83 million units in July from a downwardly revised 5.26 million in June, and are 25.5 percent below the 5.14 million-unit level in July 2009. Sales are at the lowest level since the total existing-home sales series launched in 1999, and single family sales – accounting for the bulk of transactions – are at the lowest level since May of 1995.www.realtor.org/research/chief_economist Lawrence Yun,NAR chief economist, said a soft sales pace likely will continue for a few additional months. “Consumers rationally jumped into the market before the deadline for the home buyer tax credit expired. Since May, after the deadline...