I've never considered my razor purchases for any sort of resale let alone investment. For now at least, I see my purchases as a last stop and their value of a purely personal nature. Things may change, but for now that's the way I approach it.
Printable View
I bricked my phone so no more ebay surfing for me for a couple weeks lol
It's not the worst addiction to have. As long as you enjoy it and can afford it there's nothing wrong with buying old razors to clean up. If you end up with too many you could also use them to help new people who due to lack of experience tend to buy junk.