I have HP 2545 deskjet printer and it uses HP 678 cartridge. Recently while buying a new cartridge at a stationary shop, the shopkeeper suggested me to go for a refill than buying a new one. I bought a new HP cartridge anyways, but just wondering if refill at a cheaper cost would be a good option? Has anyone tried it? How is the reliability and performance? When I probed more, the shopkeeper (may be as a part of selling tactic) said that he has done it many times and not a single customer so far has complained about it.