When I was young, to buy a tee shirts for the kids you have to walk like 10 block to visit like 5 shops and compare prices. Let's say 1 or 2 hour and the choices were quite limited and you must keep a mental list of the location and quality of each shop. [The cheap ones may open only at the same time you have to be in the office.]

Now you can go to Mercado Libre (the local version of Amazon) compare prices and see the reviews and buy them in 15 minutes. There are a lot of more choices and the prices are lower (or higher if you like fancy stuff). It arrives home at the afternoon.

Some software engineer has to program it. Does s/he deserve a few bucks for the time s/he saved all of us?