We have used the Grain-It process for probably 15+ years now, and it does a great job. I am sure the hydrographics will do a good job too on simple items but not sure how well it will work on items like Fordor Trim that has multiple and opposing sides to 'print'.
Something to think about though and understand where the graining costs come from. The 'printing' of the pattern is really the least of the process based on my experiences. Rarely do we ever have Window Trim that is ready to go straight to the printing. The expense of these is prepping for the printing. Most Trim needs to be mediablasted, straightened, (-sometimes welded & metalfinished), bodyworked, sanded, and based before the printing happens. It may be the hydrographics does not require a base be painted? Then after the printing, the ink must be encapsulated with Clear. Again, maybe the hydrographic ink does not? The spraying of the Clear involves spraying, colorsanding and respraying the Clear for the 2nd application followed by colorsanding & polishing.
So also adding to the costs of a Woodgrain job is what kind of primer is used and what type of Clear paint is used. If I use a cheap Krylon rattle-can primer, it will last awhile but the longevity won't be as good as a catalyzed primer. The same mindset applies to the Clearcoat. Are we using Deft or Krylon clear over the printing, -or are we using a 2k Clear? Are we colorsanding the clear and hand buffing it, or is the finish textured straight out of the aerosol can? The one other thing that I don't think you can achieve with hydrographics is the character in the print. This is the grain 'imperfections' that creates the details that make the piece look real. Look at Russ' picture above and you will see in the center where there is the appearance of a joint in the exact center of the panel. Also notice how it looks like the Walnut was glued to the the Mahogany, and then the piece was carved out. If the hydro process can be that exacting, then my hats off to those craftsmen but that would be extremely difficult IMO.