You'd have to do the comparison. Is canned food more expensive too? I would think so, since it's got to be shipped in from somewhere...can't be trucked in
Many people say raw is less expensive than canned, period. No one has ever specified WHERE they live.
Here's a place in Hawaii that sells raw meat for dogs, which should be the same, just add in whatever supplements you want. Not sure if it's your island, but it's closer than the main land! http://konaraw.org/store/