Some people have taken to the idea of refilling their ink cartridges for their printers rather than purchasing new ones. It's easy to see why they would consider doing so. For example, if you look at the ink cartridges HP produces for its printers, they can be a bit pricey for some models. Generally speaking, however, pricier HP ink cartridges – or pricier ink cartridges from any other manufacturer, for that matter – are usually high performance cartridges that are designed for demanding environments. If you're considering refilling, remember the following.