I wouldn't know. But it was a widely accepted price back then in Jackson Heights, Queens. Although my friends often ended up losing much more money because the ladies always tried to steal a wallet or their pimps robbed your car while you were serviced. Also, I have heard that $21 designed to be divided by 3, $7 to the lady, $7 to the pimp and $7 to the owner of the apartment.
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Хочу лето (или нормальную зиму)