A new listing in Canada for Botbots has been found called, "Grand Opening Surprise" for about AU$35.
No content details or images, but the packaging is said to be about 30cm by 30cm, with a depth that suggests it is the same as the 5 and 8 packs, just bigger.

Based on the price, it wouldn't have more than 10 Botbots. It is listed as being a kilogram, so maybe it is just a small number of Botbots, that are packaged with a buildable display case (like the shopping mall in some of the promotional images).