What seems to have started as a great service has become a nightmare. There shoppers here in Chicago have become increasingly lazy and, well, incompetent. They replace items with anything they think might be close (despite requests for specific replacements); ask for a pound of ham or cheese or anything from the deli and you will probably get some other weight--sometimes 2 pounds; sometimes a quarter of a pound.
When you complain about the service they make false promises of a "free delivery on your next order." SAVE THAT E-MAIL, because when you place your next order they will not only charge you the delivery fee, but then deny they ever told you you were entitled to a free order.