Anyone had experience with one of these? They are called Continuous Flow Systems (CFS) for inkjet printers. The ink is kept in bottles outside of the printer. Miniature tubes bring the ink inside the printer to the printer head. The companies offering the systems say that the expense can be 1/10 of purchasing cartridges. Here is an illustrated explanation of how one system works. The price for an Epson printer set-up is $190. This includes prefilled cartridges, tubes and external inks. More details at Inksupply or Atlascopy.