There are a few of these programs out there: https://advanced.jhu.edu/academics/graduate/ms-applied-economics/ JHU, 49K https://www.snhu.edu/online-degrees/masters/ms-in-applied-economics, SNHU, 23K https://und.edu/programs/applied-economics-ms/, UND, 20K https://cogs.georgiasouthern.edu/admission/msa/ Georgia Southern, 11K? (358/credit hour x 30 credits) A few theoretical questions (I'm not an econ guy. It's more for my curiosity and my ever wandering educational eye.) Would/could someone with an Applied Econ Masters use the title Economist? I know that traditionally the PhD is the required credential but there are certainly Masters-level people walking around with the title Economist (e.g. at the EPA right now there is a job opening for an 0110 Economist that requires a Masters.) Would a graduate from an Applied Econ program ever be an eligible candidate for a PhD in Econ lacking an Econ Bachelor's? Most of these programs will admit you with the prerequisite math background and a couple courses in Micro/Macro Econ - hardly the 15 or 20 courses that would make up a usual Econ undergrad.
I've seen those economist openings. They're often paired with statistician openings at one federal agency. Anyone and everyone has been called a statistician. Many statisticians neither have a statistics nor mathematics degree.