Hello JR and all MMDr's,  The QRS player sax is easy to value.
You just have to do minimal research on eBay.  Learn to use the
"completed sales" option.

I did your research for you, and the last two sold recently in
the $255-$325 range.  That is what the current market will bear.

I look forward to reading MMD each day !

Michael Stehney