I use a safety razor, and a couple years ago I needed blades. I want on Amazon and saw a deal for 20 blades that cost only $8. The reviews were good and they were cheap, compared to buying a pack of 10 at the local drugstore. So, I bought them without too much thought. I didn't read carefully. It was 20 PACKS of 5 blades each. I ended up with 100 blades. At the time, I had a goatee and only shaved my cheeks and neck. So a blade would last a couple months. Basically, it was a lifetime worth of blades.
Now I am with the fire department and I have to shave my whole face, daily. We moved over the summer and I had 5 blades in the bathroom stuff. The rest were in a box in the garage. Since we moved, I haven't been able to find the box. I looked everywhere. I stretched my remaining blades as much as I could. But this week, I finally conceded defeat and bought another 100 blade for $9 on Amazon (different brand but similar deal). It hurt me, inside, to buy them when I knew I had a bunch somewhere. The blades get delivered today.
This morning, my mother-in-law came out of the garage with MY razor blades. They had been packed in one of her boxes (she moved in with us, which is why we moved in the first place) during the move. That is why I couldn't find them. There was still 90 blades left. This means I have 190 razor blades. It should last me 10 to 15 years, even shaving daily, at the rate I use them. And that is if I never tolerate even a slightly dull blade (just replace it every 2 to 3 weeks).
I am so sad about wasting that $9 though. LOL