micguy in post #32 gave IMO the best/most thought-out answer
https://www.talkbass.com/threads/why-would-one-hole-cost-that-much.1690417/page-2#post-29730320 , but methinks the OP might be resistant to hearing it, despite it being the truth.
There is more to manufacturing than simply "parts and labor."
A couple other wrinkles:
-Phil McKnight's tour of the Cort/Cor-Tek factory reveals that the campus is made up of several factories. The high-end premium stuff is made in a separate facility with higher quality materials and more painstaking care in manufacture than the less-expensive, more mass-produced stuff (which is made in a different facility). The lower cost stuff is still quality stuff, but manufacturing tolerances aren's as rigid so you probably will get more duds.
So it's not like a $3000 guitar is "made in the same factory" as a $300 guitar. Not made under the same roof at all.
-I remember a thread asking a similar question about the Boss WAZA Craft pedals, which are made in Japan vs. the regular Boss pedals that are not.
My reply (which was a straight answer):
https://www.talkbass.com/threads/regular-boss-pedals-vs-waza-craft.1677665/#post-29271093
Is a Japanese-made Prestige Soundgear worth $1000 more than an Indonesian-made Premium Soundgear? If you place value on features, no. But if you place value on the impeccable quality of Japanese craftsmanship, then yes.
Is a Czech-made Spector Euro worth more than double the cost of an Indonesian-made Spector Icon? If you place value on features, no. But if you place value on the painstaking quality of Czech instrument-making craftsmanship, then yes.
So, what you as an individual value is part of the tricky equation as well. And we all value different things.
The plumber I use is more expensive than the plumber my neighbor uses, but mine does better quality work and doesn't come by my house as often as the neighbor's does. My plumber also educates me on stuff so I don't have to call as often, so paying extra for quality work AND a piece of their expert knowledge is totally worth it to me.
EDIT: And
@Solipsistik 's example of Porsche charging you extra to leave out features like seats, door levers, and noise padding adds yet ANOTHER wrinkle because leaving those things out of a car affects how street legal it is, which is a whole 'nother can of worms regarding cost, price, and all that. That's adding the legal factor into all the cost/price, and legal professionals do not come cheap.