It's all about finding a 52 year old part... $100 is rather cheap with regards to it's rarity and not finding one at all... priceless really regarding it unobtainability! I needed a tinted rear one for my Yeoman, car was in BC. Lets just say I paid a heck of a lot more than that for it.
Have you read this guys plight? You may get away cheap!
Buy it! I searched for my rear clear Glass near 6 month . I played for the Glass with shipping, package, tax....1100 to Germany. The Guy who sell, wanted 40 for it