Can anybody help me find some cheap ink cartridge for a deskjet printer?

Ink made by the manufacture is usually more expensive then third party, off-brand ink cartridges, but when it comes to ink, you want to stick with the official stuff.

Cheap remanufactured ink cartridges are usually just used, empty cartridges that have been refilled. The refilling process runs the risk of damaging the cartridge, and a damaged cartridge can damage the printer. Also, some printer manufactures will void the warranty if you do not use the official inks, so trying to save a few bucks on ink may cost you a new printer.

I really have to recommend that you avoid buying "cheap" ink if possible, it may cost a little more, but it provides you with peace of mind knowing your printer will not be damaged by the ink, and that it won't void any warranties.

You can check with Walgreens to see if your particular model can be refilled. They offer black refills for 10 dollars and color for 15 dollars.

If you have an Office Max near you try them.
They refill the cartridges, black ink for only $10
and the color for $15.00.

Otherwise here are three of the lowest priced I could find currently. Hope this all helps.