Here's a money saving tip. Through March 25th, you can get your inkjet cartridges refilled for $14.99 (Black) or $22.99 (Color) at OfficeMax stores. Check your local weekly store ad online at officemax.com for applicable locations and other sales restrictions.
It beats trying to do it yourself with one of those messy syringe-type kits.
Too bad I just purchased a refurbished black inkjet cartridge online for $23. And that was even after I used the 5% discount that I found through couponcabin.com :-)