Bob Gentile , Jun 20, 2006; 11:16 p.m.
Not sure of Canon's repair policies or print head prices (sorry), but you might want to try fixyourownprinter.com first. I got a head cleaning kit for a clogged Epson. Also got a kit to fix an HP LaserJet which wasn't feeding paper properly. This was a year and six months ago respectively. Both are still working great.
BTW, now I know to print something at least once a week. Anything. Just to keep the heads from clogging.