New ask Hacker News story: How is it that Amazon's price per unit is still so often nonsensical?

How is it that Amazon's price per unit is still so often nonsensical?
3 by chrisjj | 2 comments on Hacker News.
E.g. smoke alarm, "£24,950.00/kg". https://ift.tt/F2ktHfh Its is not even remotely accurate mathematically.