Home sales nudged up in February to 703 from 652 in January while the median sales price dropped to $194,450 from $199,950 over the same period, according to the Des Moines Area Association of Realtors. Home sales were down from 731 a year ago, and the median sales price was up from $186,000 last year. Houses that sold in February had been on the market an average 70 days, up from 64 in January. The inventory of homes for sale in February dropped 4 percent to 3,329 from 3,485 in January.