Do you use 4 cartridges a month? If yes you should look at a bulk system and here is why. $1000 to $3000 PROFIT per yr. !

Most OEM cartridges are $100 - 120 each. So at $110 (average) that is .25 ¢ per cc. That is 21120 CC total cost $5280 per year for ink.

If you use an alternative ink at $70 per cartridge that is .159¢ per CC or $3358 per year in ink.

Bulk ink system 4 color 8 cartridge with 2 year chips is $550, ink costs are $80 per liter or .08¢ CC , a total of $1690 ink ink. Total of $2240. With OEM you increase your PROFIT by $3040 dollars. 

With alternative ink you would increase your PROFIT by $1118 dollars per year.