I buy my toner from
http://www.inkjetsuperstore.com/ They have all kinds of toners, they are remanufactured, but I've never had any problems with them. I find that they actually last the same or even sometimes longer, than the toners I buy at Office Max, for a whole lot less money.
HP doesn't make money on printers. They make money on ink. That's really their profit strategy. Sell the printers cheap, and the ink high. It's why you can often get an inkjet printer with starter cartridges for cheaper than it costs to buy new cartridges! I've known people to go buy 10 inkjet printers while they were on sale for $50, because they could just toss them when they used up the ink, and STILL be saving money!
Toner remanufacture, especially with laser toner, has gotten a LOT better over the years. I remember the days when remanufactured meant cheap, crappy, and messy. Now, I notice no difference in print quality between name-brand and remanufactured toner, and the savings is considerable. Toner for my little black and white laser printer is $75 a pop. I can buy it for $25 remanufactured, and it lasts just as long!