Maybe it is a poor analogy but I think of a lexus or a mercedes as opposed to a ford focus or a kai. They will all get you where you want to go but some , with admittedly a bit more luxury. (that is why it is a poor analogy) I sold my Fillys, 4 vintage pieces, too. They were great shavers but as mainaman said, not better than many unknown and non collectible Solingen vintage razors.

OTOH I keep some of my relatively expensive TIs because I really like them enough to hang on to them while there are many inexpensive alternatives that will probably shave just as well. If someone wants to spend the $ to get a vintage Filly they probably won't be disappointed.