The 15 Most Expensive Liquids on Earth, Some of Which We Even Use

10. Nail polish — $2,200 per gallon

This is Essie’s price, the brand that produces some of the best chip-resistant and brightest polishes in the world. There are a lot of high-quality brands that claim even higher prices for a nail polish.

9. Black printer ink — $2,380 per gallon

Surprised? So were we! And that’s not even the highest. But you should know that we are talking about inks of high quality from well-known brands. Companies spend great sums of money on the research and development of the best ink quality.