i have epson photo r220 printer,and i'm looking for web site where i can buy ink cartridges at good price. i've been to few sites and seen them for same price i can get in stores here where i live. some of these site also carry ink cartridges that are compatible with the r220 for about half the price. can i get the same print quality from cartridges that are compatible with the my r220. can someone kindly point me in the right direction?