For the cheapest Michelin 1-star one dim sum? Look up Tim Ho Wan. One of my favorites though it's the one near Hong Kong MTR Station. Cause after checking in your bags at Hong Kong station, you can eat or grab takeout before taking the Airport Express to your flight. Yes, I'm the guy who brings food onto a plane. Now you know one of my secrets.
Convenient. Cheap. Tasty!
You must order their pork buns!