As is common during the festive season, companies begin sending us
Here is what it looks like (you can click to see it bigger if you like):
As you can hopefully make out from my picture, the tray is composed of two parts, a clear polystyrene tray, and an insert which provides slightly beveled holes for 48 pieces of the candy.
In this second picture you can see that the nominal 30mm base fits tightly, while the 25mm base is a bit loose. I shook the tray around a bit, and no figures fell over, which is good. When I was putting all of this away, I tried one of those newfangled lipped 30mm, and it fit perfectly, not loose, nor too tight.
So keep your eyes open this festive season, you never know what you might see.