Two razors....ABSOLUTELY!! I started with 1 new razor. Then within a few days I bought another new razor, just to have one for when I needed to get the other honed. Then within a week, I had a inexpensive vintage on the way to practice stropping without ruining my new blades. Then within another week a nice vintage was on the way. Then about 2 months in, the honing bug hit, and some stones and 5 more inexpensive vintage razors to practice on were on the way. As I type this, I have 4 more vintage razors on the way to my mailbox.

Two razors....ABSOLUTELY!! It's the bare minimum you NEED. LOL