the question is like...how long is a piece of rope..It will depend on the colors and how much of each. I don't think you can put a number on it. I do know that you will get 5-6 times the print as you will from just cartridge.. I just order at cart set for an extra 1280 I have from TOG..so far Sawgrass has not shut them down..court case pending. but the cost was $140 for a set. So now I will check and see how good their ink is before committing to bulk system