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.
How much does it cost? On average, renting a porta potty can cost anywhere from $50 to as much as $175 for one day. The more units you rent, the lower the âper toiletâ average will be. For those who need a porta potty on a monthly basis, the costs can be anywhere from $100 to $400 per month.