For a laugh - if you search for vintage Gillette razor on ebay, you will get some hits that pull up the Gillette Sensor.
What a steal! They obviously didn't know what they had.
+1
Those Sensors are a hot item and very hard to find.
Last year, I traded a mint Gold Toggle for a NOS Sensor!
The razor and blades within the packages were manufactured in 2000 and they have since long been discontinued. It is very hard to find pieces like this still SEALED and they are have been becoming increasingly popular.