how much are you potential to settle for replacement ink for the epson 4050?

how much are you potential to settle for replacement ink for the epson 4050?

you can go and get sets at argos with adjectives 4 colours in for lb24 or you can buy them seperate for lb7
http://www.box-shift.co.uk/inkjet_cartri...
$35 for a investigational cartridge but if you move about to Cartridge World you can give them that tape and get a full new one that they re-fill for similar to $16
http://www.choicestationery.co.uk/printe...