Lexmark cartridges? Maybe Seal Honey or Office Point.
Before buying a printer, the number one consideration should be the printer cartridges and toner.
For example:
HP Laserjet 1102 = KES 11500. Toner Cartridge No 35 = KES 5500.
HP Deskjet D1663 = KES 3000. Ink Cartridge No 121 Black = KES 1500, Ink cartridge No 121 Colour = KES 1800.
HP Colour Laserjet CP2025n = KES 48000. Toner cartridges Magenta, Cyan, Yellow and Black = KES 40000.
Compatible HP consumables are easy to find (Original OEMs are expensive!). For the vague models, Samsung, Lexmark, Brother, Epson, make sure you have a reliable and cheap supplier for the cartridges before you buy the printer.
Set out to correct the world's wrongs and you will most certainly wind up adding to them.