iSpring RCC1UP under sink water filter system

I have replaced my iSpring RCC1UP wall mounted under sink water filter system with the next generation floor mounted version due to a lack of space under my sink. The unit has worked without issues since purchase in Jan 2022 for $718. The assembly will require replacement filter cartridges for stages 1,2,3 at approx. $40 a set. The Reverse Osmosis (RO) cartridge probably needs replacing at approx. $50. It has a complete set of new tubing , installation hardware and installation instructions and a standalone pressurized bladder storage tank. The AD will be removed in two weeks time and the offers ranked. The highest bidder will be Emailed March 16th. A non response within 2 hours will result in the next highest bidder will be contacted Please, only serious reasonable offers will be considered. Email contact only.