I was just wondering where everyone buys thier printer ink. I just got the Canon i9100 and I need to replace a couple of the cartridges. I went to staples and the in store price is $1 or $2 higher per cartridge than the website, but the website requires a $50 purchase to get free shipping. Plus they dont take canon ink cartridges, which I was hoping for to reduce the cost of each by $3. Office depot seems to be the same price as staples, but I dont know if they would take the canon ink cartridges and give you store credit. Amazon seems to be the cheapest ive seen so far, and its not that hard to get $25 for free shipping.