I have a Redfield X-tube, New Old Stock still in the box with the plastic wrap around the sight itself. This was an accessory on the Olympic and Palma micrometer sights that was intended to further refine the sight picture. I saw an old Ebay sale that went for $167 that was listed as 95% and a current one used that is @ ~$100 but has some nicks. I ususally don't trust Ebay for gun related sales but that was the only place I saw any. Are those prices about right? How much of a premium should NOS bring over 95%?