Some years ago, perhaps two or three decades, there was a couple who operated an exclusive male brothel under the guise of "house party" on an island in the Aegean Sea.
Are we not "over thinking" this thing? The intent in the posting was to give the lad a promotional "plug" not to open a topic for philosophic debate. Shall be ponder Arby's advertising slogan, "We've got the meat"?
There yet something of the boy in every man. The reality of the escort" business, more often than not and any moral scruples aside, is the selling of flesh; If rentmen is not a market for shopping escorts, what would you call it?
Costly implies a $$$$$ hire that was well worth the money placed on the table; expensive implies a $$$$$ that was not worth the money placed on the table.
Physical beauty, being abundant, is the cheapest commodity in the marketplace. Think Havana, Buenos Aires, Rio... "Attentiveness" brings a premium in the marketplace.
$7500 flat rate for a weekend on Palm Beach; exclusive of roundtrip airfare and bed and board. "Decorative object" service only; that is, he will be an adornment to my home for the duration of the "hire".