Joseph Grado Signature tonearm


Hi,
My neighbor's husband passed away a few years ago and she is starting to sell a collection of his vintage Hi-fi.
She has a new in box Joseph Grado signature tonearm and would like to know what it's worth. I can only find listings from 10 years ago in the $400 to $700 range. Is this price still valid? 
Thanks
Jason
garmando
I would be interested in older Grado Signature cartridges if he had any. They were white in color. Ask her and I could be a buyer!


@aolsala i have Grado Signature XTZ (top model in mint condition in original package with manual), feel free to make an offer.  
Grado Signature XTZ is quite rare, retail in the 80s was $750.
I have one in mint condition