Because it is more costly to make, high-quality supplements cost more. A high-quality vitamin may only be offered at a doctor's office. The supplements are generally composed of high-quality ingredients. They can help your body by providing proper nutrition your body needs. If you still want to purchase supplements from a store, make sure you purchase the more expensive supplements that are made with quality ingredients. Be aware that taking good care of your health will always be more affordable in the end than not taking care of your health.