Instruct: Classify the given Amazon review into positive or negative sentiment.
Query: Great Amazon price, but have to buy WAY too often

I've been fairly happy with the quaility of these inks through my Pixima printer. But, I somehow let my normal a-retentive research slip and purchased this printer before finding out about the ink supply. Before purchasing a printer, always find out what ink it uses.I bought this set up so I could print my own pictures from home. That is SUPPOSED to save you money from going to a photo shop. Add the cost of the ink & glossy photo paper and this printer/ink/paper combo can be over .10/picture higher that getting them professionally developed!NOT COOL, Canon.