Hello guys..I agree these are awesome.
Grz bears--Not trying to bust your hump here, but either the math is wrong on your part, or you are getting robbed on your purchase.
All the health food stores that I buy my Food Grade peroxide from are $20 for a ONE LITRE(1000 ml).
A drugstore cheapo is 89 cents as you have all stated(500 ml).
The 1 liter(1000 ml) is twice as big as the 500 ml cheapo drugstore, right?
So, so far we are twice as much peroxide.
Now..that Food Grade that I buy is 35% strength..where the drugstore is 3%.
If you take 35 and divide it by 3, you will see that the food grade is 11.67 times stronger.(I always dilute my food grade to get to 3% sollutions).
It's twice the volume(as stated above), and 11.67 times stronger...so:
multiply 11.67 times 2 to equal 23.34.
For $20(food grade) i am getting the equivalent of 23.34 bottles of cheap peroxide which has additives and crap.
23.34 bottles of cheapo(89 cents) equals $20.77
SO----you would actually be spending the same or slighly more by buying something that is not even close to the same in terms of health benefits.
Please compare your prices, as the value is there.