The following was instant gratification when I was young :
Since I'm an older person, I remember having to order something via mail (yep, I was ordering things before they had call stations) and waiting for the letter to arrive to them and then them to ship the product to me, sometimes it was six weeks before getting it. Then later on someone decided you could call them and they would send it out and get paid COD, talk about speed, I could then get something within three weeks !!!! BTW, when I was in school, we had to learn how to write a letter to order something, sure that hasn't happened in a long time. Oh, we didn't have time to sit around and wait, because chores and work kept us busy, different times for sure.