When sorting by price on a website what do you assume each option means?

I swear every website assumes something different with "price ⬆️" and "price ⬇️"

I assume arrow pointing down is highest price to lowest price

And up is lowest to highest.

There's definitely websites that think the opposite.

Why can they not all just have sort low to high?

When sorting by price on a website what do you assume each option means?
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