Hiring a landing page copywriter who is actually based in New York changes the work in ways an offshore hire cannot copy. Fifty markets in one, with huge search volume and equally huge competition. Bolder claims are normal, Spanish language content is often a growth lever, and state level regulation can change what a page is allowed to promise.
Practically, that means your landing page copywriter writes in the spelling, currency and legal conventions used across United States, references New York and wider New York accurately, works inside your hours so a question does not cost a day, and quotes in USD. Languages on the bench for this market: English, Spanish.