Just came across these cartridges. One is a set of emprty cartridges designed to be refilled whenever you need. The other is a set of cartridges with cleaning fluid in them that automatically removes any blockages. Does anyone know of these cartridges and if they are good/worht buying.

Refills
http://www.compatible-inkjet-cartridges.co.uk/epson-t0715-easy-refill-kit.htm

Cleaning Cartridges
http://www.compatible-inkjet-cartridges.co.uk/epson-t0715-set-of-cleaning-cartridges.htm