Trust him, he’s a Doctor.
In my opinion, prices of NOS razors have diminished. You can get excellent NOS razors for 200$ or less. The overpriced Filarmonicas with too much milaeage are just an outlier, simply because newbies buy into hype and will eventually take the bate. Same goes for other overhyped brands, like Puma.
I will share this link and I imagine many will jump on this, but here is an example of pristine NOS razors available for purchase at what I consider to be bargain prices:
https://www.ebay.ca/itm/DREIFUSS-ORO...-127632-2357-0
I pulled the trigger on a beautiful NOS 7/8 the seller listed and will post my observations when it arrives.