I rarely sell swim spas WITHOUT a salt system, nobody wants to maintain 1500+ gallons by having to pour in chlorine every other day or worse yet one of those stupid traditional bromine floaters. I add the 24hr circulation pump and the salt system to basically 99% of my swim spa sales, we sell a bromine based system and it works great and customers love it...less maintenance, less chems, less water changes, softer water, I mean why wouldn't you want one?