Most people stuck in "someday I'll work from abroad" are trying to figure out the forever version — the visa, the relocation, the long-term work setup, the question of whether they could really live somewhere else for years — before they've spent thirty days finding out if they even like working from somewhere else.
Skip the forever version. Budget for one test month.
Real numbers, real city, real dates. The whole thing collapses from "a life decision" to "an expense I can plan for."