But that’s really besides the point of the majority of the article, as this is largely about converting customers online orders. If I’m ordering apples online, I’d want to buy on a per-unit basis (eg. 5 apples for the kids lunchbox), I’d be pretty miffed if I ordered 800g online - expecting 5 and only getting 4 bigger ones.

The opposite case is also annoying as I’d prefer to buy potatoes by KG and don’t care how many that comes to, but when selecting per unit the actual per-KG price isn’t known until after you have ordered and is based on whatever the particular picker does on a given day.