It's not convenient, and some people are ashamed to ask for help.
Most Helpful Girl
You don't need to be.
This post only shows that you're insecure of your height.
Pair up with the dude that wrote a myTake how girls should date guys that are 1 inch taller or shorter than them. >.>0
Most Helpful Guy
Basic marketing strategy:
The overpriced stuff they REALLY want to sell is placed at eye height.
The rest either so low that you have to kneel to read the price or to stretch and ask help to get it.
And once a month they move everything to make people search, hoping they'll buy some product they didn't try yet.
It's the same in Europe and in the US.1