They're dissociating the numbers on the right from their normal 2-digit value into being two separate 1-digit values. 16 is not sixteen, it's a one and six. The value of 2 is between 1 and 6.
Same goes with 3 being between 2 and 4.
Then they do even more delightfully dumb shit when extrapolating this logic to 4.
In reality, the things in OPs image are just $8 a piece.
What I'm saying is that this commenter is a fuckin savant.