There are two ways to boost your wealth: make more money or spend less of it (and either way, save more for retirement or other purposes!). Neither one is particularly easy. But, here’s one surefire method to spend less: save on purchases that tend to be more expensive than they need to be. Case in point: drinking water. While bottled water is convenient when you’re on the go, for home use it’s 75% less expensive to use a water filter on your tap or in a pitcher. Another example: over-the-counter medication, such as ibuprofen. Most name-brand products are significantly more expensive than the exact same product in a generic or house-brand package. Look also at cleaning supplies. Experts say it’s just as effective to use such inexpensive staples as vinegar, baking soda and ammonia to wipe counters and clean floors than to pay more for brand-name products that contain essentially the same chemicals in a prettier package.