It is more cost-effective and ecological to use compatible ink cartridges and recycle them with us. Today’s original ink cartridges contain a fraction of the amount of ink they can hold, and at the same time are priced higher than they previously were when they contained a full tank of ink. Compatible ink cartridges are more cost-effective than originals in this regard, and are more ecological than originals when you return them empty to us, as we recycle them properly.
You can read more about the differences between original, compatible and remanufactured cartridges here.