Find the model number on the machine before comparing anything, since a cartridge that looks identical may not seat in a neighbouring model from the same maker. Then compare on page yield instead of price, because a high-yield cartridge costs more up front and usually less per page. High-volume printers are cheaper to run on toner than ink. See ink cartridges, toner and copy paper.

Brother printer, toner and ink supplies arranged on a bright modern office desk.
Printing Supplies for Offices

Shop printing supplies including ink, refills, cartridges, leads and consumables for office and school use.