This appears at first glance how people would use them, but, casually, you will start to see a pattern emerge that allows people to use the services more and more, and for more ad hoc uses, gradually divulging into "I need something right now" mentality, and complete and utter lack of any planning. That's what all my friends do who use these services.

I would argue that if you want fresh ingredients, such as herbs, you should adopt a simple herb garden in your home. If you can't be bothered to do that, then I suppose you could shell out $20 every time you need some fresh basil, but I think now I'm being pedantic.