I would suggest, if the bike is complete, and roadworthy, without damage, somewhere between $2000-$3000.
These are mile eater machines, and IMHO, very under rated in today's motorcycle marketplace.
Very easy for K 100 and 1100 machines (and K 75 models) to easily exceed 100,000 miles.
So what the right value for an RS of this year and mileage?