The USA five star ink tanks from Tyler-Martin (sold thru TM's USAInkjet store on eBay) are good for Canon/Epson (better than the Rainbow brand they sell thru the TylerMartin1 store on eBay), but since you have HP, you are stuck with buying refurbed carts or refilling your own (you should be able to refill at least 5 times before the head wears out beyond re-use). I got a complete set of tanks for my Canon iP3000 from USA for $12. shipped
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Computer Friends has always sold quality bulk ink and refilling kits. Universal is decent too but IDK if they are still in biz (used to see their ads all over - one would have thought that they were the only refill company out there - don't see their ads any more at all). Yup, Universal is still around -
http://www.kalvins.com .
. But I'll be going with swiftink.com for my next ink tanks if USA can't convince me that they have improved their inks since I last bought. They are considerably less intense than OE inks - whereas the tanks I was buying for my i450 were at least as intense as OE ink, if not moreso. You didn't mention which carts you use, but swiftink seems to have a good selection of HP carts for considerably less than OE.
. If it were me, I'd use that all in one for scanning and get a Canon iP3000 for printing (can be had for less than a set of OE carts for your HP right now) and you'll save a ton on ink over the life of the printer (unless you are willing to go the self-refill route on your HP).
.bh.