. >> reporter: stephanie landry heads up prime now. >> you can get all of your basic groceries, electronics, toys, sporting equipment, books, all sorts of things. >> reporter: she walked us through this amazon facility where workers take those on-line bags for delivery. >> how many items can you keep in a smaller warehouse like this one? >> somewhere between 20,000 and 40,000 items. >> reporter: for larger orders the company also offers amazon fresh. an on-line grocery store with even bigger warehouses. and it's not just amazon. grocery chains like safeway and whole foods, even google are among at least 50 major outlets offering on-line delivery. could top $12 billion this year. >> feel free to help dig in here. there's a lot of food you got. >> reporter: the new shopping options aren't limited to plain groceries. >> we got some garlic chives here, some celery. >> reporter: meet the meal kit. >> it's some wild alaskan salmon, and here is our antibiotic-free chicken for the chicken dish. >> reporter: three dinners in a box for the week. crispy chicken. >> reporter: complete with recipes, pic