For Inkjet Cartridge Savings:     

Ink cartridges; printer supplies      

Replacement printer cartridges can dip down to three to four cents per page, and even lower.  Considering, the combined benefits of colored graphics when using inkjet cartridges and, the ability for photographic-quality results - this is not exorbitant [although costs for printing image photos can exceed two dollars per page, remember that many jets can produce black and white copies alone if wanted].  To this, credit mainly the thermal and recent application technology along with the progress of ink.

But this is not to mention other benefits, such as the  swift warm cycle for the inkjets [laser printers are renowned for their delayed start phase, including recent color-able lasers].

INK CONSUMPTION AND SAVINGS

By keeping a reign on ink quantity, savings can likely result.   This could mean being aware of the actual ounce count of the cartridge being purchased.  Or, if the  reservoir is high capacity (assuming your model printer can handle) .  High capacity designs typically offer user economy so may want to note this, since it's not always spelled out in the buy-sell exchange but should be considered before buying.

Since your total printing cost is due mainly from the ink cartridges, evaluate whether the tricolor replacement option is justified against the separate three part yellow, cyan and magenta dedicated system -- which offers improved efficiency in terms of entire consumption, with no sacrifice of partial color left in a mix.

Knowing what replacement type best suits your needs.  Could this type be a compatible, OEM, or remanufactured? (again, along with which type your manufacturer's model can accept).  For a  rundown see our cartridge resource.

Other options for meeting your budget: finding bulk discounts, utilizing photocopiers for duplicates, setting print modes to economy or draft while taking advantage of ongoing promotions...