Does anyone really save money by using the online pet supply sites? We shop at one out of necessity, because our cat requires a special kidney function diet food that isn't sold in stores. The supplier is fast, cheap, and fairly economic if we time our orders to coincide with shipping promotions. Otherwise, shipping can be relatively expensive. However, I can't imagine using this supplier (or any of the other ones) as a regular source for cat food that we can buy locally. The online prices on both food and treats tend to be much higher than the store prices here. Anyone have this same experience?