GRAY — Tri-Cities home sales posted their fourth straight year-over-year gain in 2014 while the annual average price dipped 0.9 percent, according to the Northeast Tennessee Association of Realtors.NETAR's Trends Report said there were 4,833 closings last year, 160 more than in 2013 and 462 better than 2008. Last year's annual sales price was $152,505, down $1,356 from 2013.