Not exactly. Typically there will be a sign that lets you know how much the produce is per imperial pound. There are analog scales there that you can use to weigh your produce to give you an idea of how much it will be, but the real digital scales are at checkout. At self-checkout you put the produce onto a scale and then click on the picture of the produce your are purchasing so the computer can correlate the weight with the item. There isn't anything stopping you from clicking the picture of a cheaper produce item other than the honesty system.