Median home prices in Bend and Redmond dropped in August, according to a report issued Tuesday by Bratton Appraisal Group.Bend’s median single-family-home price dipped to $265,000 last month, down from $280,000 in July. The median hit a five-year high of $281,000 in June, Bratton data show. The median price in August 2012 was $235,000.