yes you can select specific products per market. just edit a product and in the box next to channels you can select the markets and uncheck non relevant products.
Topic summary
Goal: launch international (EU/US) storefronts with only a subset of products using Shopify Markets.
Earlier status: Not natively possible in Markets at first. Sales Channels aren’t the same as country/region Markets. Interim workarounds included Liquid-based country customization and geo apps (e.g., Advanced Store Localization), plus tags. Caveat: if a product has stock, customers may see it and reach checkout, but without a shipping profile it cannot complete.
Development: A beta for per‑market product availability opened, then closed ahead of general release.
Current status (most recent update): The feature is now live. Merchants can publish products by Market. Docs: help.shopify.com/manual/markets/publishing-products-with-markets. Practical use: edit a product and adjust its Markets in the availability/channels box to include or exclude it per market.
Open items: One user asked how to filter or hide excluded products from storefront loops (avoiding redirects). No official solution in-thread; only a user suggestion to rely on market availability settings. Core need appears resolved; UX filtering guidance remains unconfirmed.