So, I noticed, the larger ink tanks for the HP Printers (70) cost on average 1/2 the price per ml as the HP38 cartridges for my 9180.
Has anyone purchased 70 cartridges and used a syringe to suck out the ink and fill 38 cartridges? I guess the only problem with that is replacing the chip on the cartridge, which I've seen refill sets on Ebay that include them, so I know they exist.
I would not consider using a 3rd party ink, like found on EBay.. you don't know what those inks are. But using a genuine HP cart would save me a TON. In the last 2 weeks I've purchased 16 cartridges.. I've been printing 12x30 album spreads like a mad man. Even with HP's current Buy 2, get 1 50% off, it's still costing me a fortune. If I did the HP 70 trick, I could hemorrhage a little less cash than I am now, as I really do not have the cash available to upgrade to a larger printer like the ipf5100, which is my next step I'm planning on.