MFT/3 Original Protractor

[dawatson833]

I have a mft, but took the protractor off when I bought it.  I've never used it. 
Thinking about selling it, but don't know a valid price.  It isn't listed on the festool site separately.
Don't see them on ebay currently or in the past.  Any thoughts on a valid price for it?

 

[flair woodworks]

Does this help? Festool Mitre Gauge for CMS and MFT 574797