Actually, gibeon isn't any big deal.
An Arizona firm offers complete watches for under 500.00 with what I believe to be genuine Gibeon dials.
My uneducated guess:
1. Rolex sells primarily through brick and mortar meaning people will actually look at the product and decide if it's worth the "bump". WG is rife with threads whining about the bland nature of their dials - almost like invicter was dumpster-diving Rolex's rejects.
2. Those Rolex I've seen with a significant "Gibeon bump" also included some degree of "diamond hour marker" bumps.
3. The difference in (to offer a semi-related example) stainless steel alloys is measured in dollars per ton
. Rolex gets more for their choices of material in a manner totally independent from the market value of that material.
Gibeon, despite its finite quantity, isn't really all that expensive.
What would be expensive is somehow magically imbuing either stainless steel or gold with a "molecular structure".
That's straight out of Star Trek.