So, you don't feel you must have Epson brand cartridges? Is that right? Have you looked at some of the online sellers? I haven't used any online ink specialty sellers for a long time, so I won't recommend any specific ones. I just Googled for
printer ink cartridge refills and, obviously, there are many online sellers. This one was at the top of the list:
http://www.re-inks.com/ and I believe they have ink for your model printer.
What about regular retailers? Do you have Walmart, Staples, OfficeMax, etc., in your area? If local retailers don't carry ink for your printer, an online seller seems the best option.