People fail to correctly value (1) the cost of these time saving services and (2) their own time.

It's similar to how people will drive around to save 5 cents per gallon on gasoline. Usually, they will only end up saving a dollar. Or someone will make multiple trips to their car to unload all groceries (which can add significant time in apartment buildings) because they wanted to save 20 cents and not buy a paper/plastic bag during checkout. These little things add up in time.