Less than a dollar an ounce, at least $5 an ounce in a typical store, no tax, free shipping if you buy two bottles, no better deal anywhere. I've been using M-Pro7 for over 10 years, no solvent smell, does not leave any odor or dry out skin. Best cleaner on the market, does not harm plastic, wood, or optics.
Pros: Best price ever
This review was written in the old system and had content requirements that are different than reviews written today.