"After each use, I rinse the loop under running water and sterilize it in a small pool of rubbing alcohol in my palm," he continues.
He forgot to calculate the expense of the rubbing alcohol.
Figure 50 cents for 16 ounces, and assume he uses 1/20 ounce in his "small pool" (that's not much). 320 doses per container at a unit cost of .15625 cents per. 5,040 flossings per package is $7.87 - $2.89 in floss savings for a net loss of $4.98.
This idiot is paying 5 bucks for the privilege of reusing his dental floss.
Normal use of floss is $.01445 per use or $5.2742 per year.
With the silly method:
cost of floss is $.000573 per use or $.2093 per year
alcohol cost is $.001562 per use or $.5703 per year
total cost is .. $.002135 per use or $.7796 per year
Annual savings is $4.49 vice $5.06. I would also point out that this man places no value on his labor. Figure it takes 15 seconds additional time each day: to save $4.49 he spends about 1.5 hours, so his wage is about $3.00 an hour. Now that is a cheapskate!
Can you tell I'm on lunch break?