Our ionic body cleanse foot Spas are the most affordable negative ionic body cleanse foot Spa units on the market today with State of the Art features. In contrast to our competitors replacement arrays our replacements are in-expensive and trouble-free to maintain; just plug it in and dispose of it after 70-80 uses when it is exhausted. There are no plates to change and the cost is only $89 (US) for 3. That's a quarter of our competitor's price.