: ...undeveloped land in Newport Beach vs. Hemet, CA?
All land is compared with the (commercial OR agricultural) 'fertility' of other land. If unfertile land is conterminous to fertile land, then its value is increased by the investment already in place. What is that investment? LABOR---past labor.
: ...a rookie card of Mickey Mantle?
Antiques do not negate the labor theory of value in the least. Consider the LABOR looking for 'treaures,' consider the LABOR of maintenance expenses...
: ...a Cadillac vs. a Buick?
You'll find either more 'expensive' components (past LABOR) or more (fresh) LABOR (-time) in the more expensive car.
: ...a brain surgeon with 20 years experience?
Is not 8 years of school & internship not (past) LABOR?
: ...a menu from the last night of dinner aboard the Titanic?
See antiques above.
: ...high fashion?
Consider the LABOR going into advertising.
: ...dinner at Spago's vs. McDonald's?
See Cadillac vs. Buick above.
N.B. Let us not forget that capital is LABOR and materials---AND materials are past LABOR (dead labor).