Where we're at right now we paid about $10 for 4 cups of yogurt. I figured it will be cheaper if I just made it myself. Did some research and this product came highly recommended so I bought it. Comes with the handy thermometer so you know when the temperature is right to add the culture in. Pour into the cups, place them into the maker, cover it and set the timer. I set the timer for 7 hrs. Yogurt comes out delicious! Buying a second set for my mom.