Plus the fact you don't have to leave the house and can look at a variety of products. Then you have actual customers giving their opinions of the pluses and minuses of each item. A couple of days later the doorbell rings and there is a box on your porch. Love me some Amazon.
Here in NYC, the doorman signs for the packages and puts them in the package room. An automated building system sends you an email when your package arrives, and you go down and sign for it.