How much does it cost to refill my cartridges? -

I have a hp deskjet 3520 and the cartridges say c87284 on the color one and c8727a on the black one. Where s the cheapest place to refill them? I m in Franklin, Wisconsin by the way.

Hello I am from india, and here cost is.............. Black=25/-(rupees) colour=70/-(rupees)

just as easy to buy new ones plus its a better chance they dont messup your printer..... dont mess with it buy new ones any wheres