Found the "Bibigo" dumplings at Costco.
1) They were not soup dumplings, but that's OK.
2) Filling is about the same minced chicken/vegetable filling that's in most of the bagged "potstickers" they sell.
3) They're about half-dollar sized each, not the baseballs I was anticipating from the box, the photo of which must have been taken using the Hubbell Telescope.
That said, for a microwave dumpling ready in 2 minutes, not half bad. The dipping sauce they include is WAY better than most of the ones that come with the bagged "potstickers", and is really what makes these acceptable. Would buy again for a quick fix.