At POOL PLAZA.COM, we have been selling salt water pool systems for over 10 years. We could sell just about any unit out there, but we have chosen to sell just the right units that we feel offer our customers the best in quality and value. Start enjoying the benefits of salt water today!! But what are the cost benefit of a salt water pool? Most people do not buy a salt water pool system for the sole purpose of saving money. They buy it for the increased swimmer comfort. With that said, they do save quite a bit of money on pool chemicals, but it probably takes about 2-3 years before the system pays for itself.