However, unlike a stove that uses at least 2 000 watts, pressure cookers only use half that amount, 1 000 watts. Save Money by Cooking all your meals from scratchYou’ve heard it before: if you want to save money, cook every meal from scratch. Multi Cookers and Slow Cookers are also UsefulThe only downside is that pressure cookers come with a R1 300 price tag. But when you don’t have money for a pressure cooker, turn to a more affordable appliance like a multi cooker or slow cooker. You can buy cuts that take longer to tenderise, but have them cook in 40 minutes with a pressure cooker.