Hey all! We have an assortment of filter cartridges, I'll post the quantity, price, photo and provide a link to the manufacturer's website for more information! 2 - Aqua-Pure AP1001 Cartridge - Price: $15ea - Link 3 - Aqua-Pure AP420 Water Filter Cartridge - Price: $30ea - Link 2 - Caware Activated Carbon Block Filter Cartridge - Price: $15ea - Link (These are CBC-10 Large Cartridges). 1 - Prefilter Cartridge - Price: $5 - Link 2 - Caware Activated Carbon Block Filter Cartridge - Price: $10ea - Link (These are CBC-10 Small Cartridges). Please, contact Dave Rigo at dave@watersheddistillery.com if you have any questions or would like to make a purchase. Thank you!