I use this site http://www.inkredible.co.uk/

I have to say they have some definate bargains on there! I have an epson stylus SX200 series. I went on the site last night as we were down to our last 2 cartridges and got a bargain for 16 ink cartridges for £24.99 (Free delivery)

I ordered at about dinner time, they arrived today.

definetely worth a look to see if they stock the cartridges for your printer. Especially for that prices!