I don't recall there being a item limit. Which is unfortunate because the people who have boatloads of carts and their carts already loaded. They're the most fucking slowest ever that they even give old people a run for their money. Slowly raising items to scan. Slowly putting them in bags. Slowly paying. Slowly moving the fuck out of the way as they try navigating a heavy cart with all of the junk that they'll barely like as soon as it gets home.