It is not marketed as one and should not be treated as one. Holders are taxed on worldwide income under the ordinary rules for US permanent residents. Alongside the US$15,000 fee and the US$1 million gift, budget for qualified tax advice, professional fees, and other visa and medical costs. None of the payments are refundable equity.
Get the tax review before the status begins
The useful sequence is tax advice first, then a decision, then the filing. A qualified adviser can explain how foreign income, corporate holdings, and disposals would be treated once permanent residence starts, and whether anything is better done beforehand. Treating tax as a post-arrival administrative task removes options that existed earlier.
Ask for the engagement in writing, with a clear scope covering both US obligations and those of your current country of residence. Hypothetical example: a household intending to keep its main home abroad treats the tax question as an administrative matter for after arrival. A first review would reverse that order, since several planning choices narrow once residence begins and the sequence of a sale or a corporate reorganisation relative to the change in status can matter considerably.
It would ask for a written engagement covering both the United States obligations and those of the current country of residence, since advice addressing only one side leaves the household exposed on the other and neither adviser is likely to say so.