Just tried a relatively new place in Koreatown that has great dumplings. They have kim chi and chop chae mandoo and you get 6 big dumplings for $3.99. I thought the kim chi mandoo was superior.
You can also get them frozen and/or uncooked - I think it was 15 for $10.
A friend said their chachiang mein was better than Mandarin House - I'll try that next time.
the location is:
Authentic Korean Dumplings
698 S Irolo St #111, at 7th
Los Angeles 90006