What's the cheapest grinder that can do espresso?

Reviewers across r/espresso and CoffeeGeek generally point to the Breville Smart Grinder Pro (~$200) as the entry point for a true espresso-capable grinder with adequate dialing-in range. Cheaper options like the Cuisinart DBM-8 are repeatedly flagged on r/espresso as not grinding fine enough. New entrants like the Mokkom and Shardor 64mm flat-burr grinders are gaining community traction at $180–$250.