WalMart metal frame pool maintenance?

On average, the care, the monthly cost it what one of these pools Intex framed in metal? In view the 15 x 48 size. For more advice or opinion on these are welcome!

You better do well Sam's Club. I have had mine for about $ 300 and Wal-Mart wanted $ 700. Odd. Because they save the same ppl. We also live in the middle of the 3 different Wal-Mart and they all had different prices for the same pool. / Shrug .. Who knows? Oh, sorry I have not answered your question original. I do not have my swimming so far. So I do not know. We are looking at salt water filter. From what can we read it as normal and clear water you can not even tell him salt, but requires very little maintenance. Since no chemicals.

How to Clean Swimming Pools : How to Use Swimming Pool Auto chlorinators