I agree. If it is in good condition, it should sell pretty well. These are well built machines that have lifespans measured in decades. Now, honestly, might be the worst time to sell...but you shouldn't lose too much off of what you originally bought it for.
I sold a lathe I had for a bit over 6% less than I originally bought it for. It had kept it in darn good condition, but it had some chipped paint spots. I picked up some matching enamel paint, and touched those spots up, and it looked pretty close to new in the end. You might try to do the same thing. I gave the thing a good wash down and clean up as well, including waxing the ways and such with Johnson's paste wax for optimal performance.