7- Black Printer Ink
Price: $2,700 per gallon
You’ve used this thing many times before, and I know for sure some of you are still using it. It was believed to be the most expensive liquid in the world, but we can agree with that.
In our list the black printer ink gets ranked #7.
Black ink used to print is the key to everything and it’s used even when you chose to print with colors.
Did you know that some printer manufacturers produce the ink in the same place as the hardware? This means that they sell the printer cheaper and then ask you more for the ink!
