Might try that. I have a HP 750 PCS. Ink is expensive. $30 a cartridge. It takes two, color and black.
You definitely should. I've never seen a home-printed picture that looks as good as a photo lab print. I wouldn't be surprised to learn that other stores offer the same service as WalMart (submit online, pick-up in one hour at local store) but they're the one that I use. Very convenient if you need/want the prints right away. The pricing is less if you have the prints delivered (takes about a week). We also used them for our photo greeting cards this year; online submission made it a breeze!
We used to print our own photos, but now we edit and copy to a CD, take them to a WalMart self service kiosk, and we get fantastic prints in an hour. As noted, if you want you can even save a trip now and upload them at WalMart.com.
We don't print pics at home much anymore, unless we only want one or two prints.
I think Ritz and other camera/photo stores offer a similar service.