What's a 30-year old Grace F9-E Ruby worth?


Since vinyl has caught on again, I brought out my turntable from the 90's and played a few vinyls. I was surprised to see that the cartridge still plays fine. To make a long story short, I not into vinyl as I once was. My interest has shifted to 24-bit music, limited as it is.

Any idea what this cartridge is worth given its age.
reelnai
Thanks, Al. You made me feel better about my moment of weakness. It's arrived here and does appear to be in condition as advertised, at least by gross inspection.
Thanks for all the replies. I don't know the wear on the stylus. My eyes can't focus that close anymore. I probably need to get a jeweler's eyepiece to check. $250 sounds reasonable. I don't have the original box but do have the paperwork. Thanks again.