I can shave maybe 3 or 4 times on most blades before they start hurting me.
+1- I could not of said it better!For me, the cost is not the issue. As you correctly pointed out, there's not a lot of money involved. For me, the issue is honing my shaving skills (so to speak). Better prep, better lather, and better technique makes the shave easier on the blade as well as easier on my face. How long the blade lasts is simply a proxy measure for how good a job I'm doing with prep, lather, and technique. As always, YMMV.