I bought my 99 Katana 750 w/7800 mi. on odometer for less than $1800 back in April.. It had sat in a garage since 2008, ran rough.. I cleaned the carbs, changed the spark plugs, checked the valves (only 1 was out), sync'd throttle and it rides like a new bike now.
No, it's not a bike known for its looks, but rock solid engine, easy maintenance, good performance and plenty of aftermarket parts for those Katanas.