Many years working in IT has taught me to be careful with recycled ink or toner cartridges. Many places that do this use bad techniques or poor quality product and in the long run it ends up costing you more when the bad ink/toner destroys your printer.
Most manufacturer's will void a warranty if recycled product is used in the printer and it is not just so they make money off of the toner/ink purchase.
Also most repair people (even the one's with no stake in selling ink/toner to their customer's) will tell you that a lot of the recycled products out there are not a good investment.
Your best bet for saving money really is getting a laser printer. If you must keep the ink jet for now, search online for sales or watch your local office supply/warehouse stores for sales and pick it up then.
I'll agree to disagree. If you look at HP's profits, a large portion come from their $1,000+ / gallon ink sales. That's how much it costs on average and is absolutely ridiculous.
Laser is a good way to go, but if you are going to do ink jet and can find a reputable recycled partner (like 123inkjets above), it's better than paying $30 per cartridge.