Supermax (short for: super-maximum security) is the name used to describe control-unit prisons, or units within prisons, which represent the most secure levels of custody in the prison systems of certain countries.
Consumer Complaints and Reviews. Outrageously expensive for services not provided: $690 - the cost to purchase your own, high-quality softener and RO filtration plus 1 year of filters and salt. $5,770 - the cost of a 3-year contract with Culligan to rent their basic softener and RO filtration with service.
The cost for a plumber to install a water softener is Â£100 - Â£500 depending on the system. For a do-it-yourself installation, basic plumbing and soldering would be required-and the allowance of plenty of time.t the higher end of the scale, salt-free water softeners can cost up to Â£2600. The more common sodium-based system as described above costs between Â£800 and Â£1200 depending on the model required.