the equipment is US$600 and easy to install. The machine takes care of keeping your levels at the right concentration. The salt can be found around the country for RD$200 for 60KG bags. it needs to be pure salt, usually coming from MontiCristi. Once you fill up your pool, you will not have to constantly add salt. Salt does not evaporate so unless you are in a very windy or very rainy location you shouldn't need to add more than a bag (RD$200) every couple months. it is therefore cheaper and MUCH MUCH more pleasant to swim in.
you are left with dealing with the PH once a week.
i have had the system for 6 years now and will never dive in a non-salt chlorinated pool ever again.