I don't think anyone said anything about "saving money" as a motivator, though indirectly they could. Making money might be a more appropriate motivator
The cue builders generally pick only the best shaft wood for their shafts. This is mostly due to the fact that one large piece to make a shaft using a non-homogeneous material ends up being a low percentage proposition. Every cuemaker worth his salt knows this. Every one of them tell you how selective they are and they reject X percent of shaft wood.
But, what happens to all that other shaft wood... the less desirable shaft wood? You can pie slice it, match up like pieces (good pieces, whatever) from the other shafts that were pie sliced and piece them back together in a pie laminate to salvage what otherwise would have been firewood and build a pretty good shaft to boot.
To me, there's no question that laminating wood to make a shaft is one way to make a good shaft out of what would be less superior wood.. i.e, wood that was otherwise rejected by cuemakers.
Freddie <~~~ IMNSHO