I saw that auction. I love Marmit Globsters Hedorah. I have that exact same small candy case in front. My girl got it for me for my birthday last month.
They are the 'middle size' in Marmit's line of toys titled Globsters. Those three are actually all of the Hyper Hobby exclusives. I have no idea how many there are, but there are seven listed on ClubTokyo. It's probably one of my favorite Hedorah sculpts around.
Marmit candy case Hedorah is one of those truly under-appreciated sculpts. Actually all the Marmit candy cases I've seen are fantastic.
Thanks for the link. Looking at them it seems they haven't released any since 2005 or at least all of the ones on Club Tokyo say that. How much are they new?