At least you are stopping at razors. I have bought a scroll saw, invested in some exotic woods, bribed a professional hobby furniture restorer and spent probably $1000 om tools, sandpaper, and materials for restoring these things. My next purchase is going to be a band saw. The only problem I have is that if I hit the lotto, I would stay in med school and graduate to restoring razors. As dumb as it sounds, I would rather restore these than watch a movie in the theatre. I feel its a productive way to spend time and believe it or not, I want to do surgery, and I have noticed that when I look at things now, I can see finer details than I could before I got into this.
So keep up the addiction. I have about 25 razors to restore and sell then I am going to buy more. I just wish these guys would stay off ebay so I could win more!