Ink refilling is actually a good idea.
Some manufacturers... I won't mention any names *cough*HP*cough* have gone out of their way to make it hard for people to refill ink. So, half the battle is to buy printers with ink that is refill-friendly. Personally, I like Canon. Theirs are simple, straight-forward, and yet still prints beautifully. Plus, Canon uses separate ink cartridges throughout their product line, so you only refill or swap the ones that are empty, so no waste that way.
In the end though, you may want a 3rd party to do it for you, even if it ends up costing a bit more than some DIY kit. That is, unless you like the technical challenge.
But it's been a while since I've looked into this, so things may have changed. I actually don't even have a printer anymore. With an iPod Touch, I can pretty much carry any image on it that I want, so.... I no longer need printing? At least, the need hasn't arisen yet.
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