No. Each eligible joining spouse or unmarried child under 21 has individual eligibility and separate stated charges. A shared trip does not merge the cases.
Build the travel plan from actual individual records
The programme states US$15,000 nonrefundable processing and a US$1 million gift for each eligible joining relative, including corporate cases. Initial inclusion is recommended. Do not assume the principal’s payment guarantees every relative’s outcome.
The vetting file is personal: passports, civil records for the marriage and the children, addresses and travel history, and a frank account of anything in a person's background that might bear on admissibility, disclosed to an attorney early rather than discovered later. A marriage, a birth, a child reaching an age threshold, or a separation during the process can alter who is included and therefore what the arrangement costs, and an agreement written around a fixed household will not answer the question. A spouse who might remain behind for a school year, a child approaching twenty-one, or a stepchild each raise questions worth putting to counsel before anything is submitted, since adding someone later is not a simple top-up of the amounts.