Compats make them cheap to run, Canon also make printers that print on discs and I have seen one with 4 tanks. The R220 is being phased out and pretty soon it is the R340 and up that will be the only Epsons to print on disc. Therefore if you find an R220 snap it up.
Notice anabolism, we are not using the words disc printer, as neither the Epson or the Canon are, they are printers that can print on CD/DVDs and that is an important difference where the warranty is concerned. If doing a lot of disc printing a dedicated disc printer is needed.