Three voices, one family
The luxury page needs exactly three voices: a serif for display and pull-quotes, a sans for interface and captions, a mono for figures and labels. Two voices is thin, four is a cacophony, three is a family. The serif does the feeling, the sans does the work, the mono does the numbers.
The details that read as money
Tabular numerals in a results block make $48.2M and $12,840 line up digit over digit — the column reads at a glance. A hairline rule instead of a heavy border. An italic serif for one word of emphasis instead of bold. None of these are decoration; they are the typographic equivalent of a well-tailored seam.