Professional drafting can organize verified facts, but it cannot supply facts the employer has not established or make unsuitable duties qualify. Before paying for repeated revisions, determine whether the missing piece is writing quality, supervisor information or a substantive question about the profession.
Define what the review fee covers
Ask whether the engagement includes interviewing the employer, checking the underlying job description and assessing category fit, or only editing a supplied letter. Those are different services. Have the employer provide its factual answers in one coordinated response where possible, reducing avoidable back-and-forth.
Budget separately for application charges and any credential work. No drafting fee purchases approval, and a polished letter should never be used to conceal duties that would change the eligibility analysis. Establish what any fee actually buys before agreeing it, since drafting and assessment are different services and are frequently sold together under one description.
Drafting turns information into a document. Assessment forms a view on whether the position and the applicant meet the requirements, and it may conclude that they do not. Ask explicitly which you are purchasing, whether the adviser will tell you if the underlying facts are insufficient, and what happens if the employer's information changes after the work is done.
Be wary of a service priced around producing a strong letter, because the strength of a letter is a function of the facts available and no fee alters them. Where the employer is paying, confirm who the adviser is acting for, since that determines whose interests they are obliged to consider.