The housing and property data research firm RealtyTrac last week released its American home sales report for March and the first quarter of 2016. The report shows that in March U.S. home sellers on average sold for $30,500 more than they purchased for, a 17 percent average gain in price, the highest average price gain for home sellers in any month since December 2007. The average home price gain in the North Port, Sarasota and Bradenton region was $53,000, a 33.8 percent increase.