This is the largest GorillaPod including ball head up to 5kg. Maybe the following model up to 3kg is already sufficient for you: Joby GorillaPod 3K Kit (ABS plastic, stainless steel, aluminium)

PS: Unfortunately I can't change the prices either. Costs about the same with other suppliers, by the way.

The Gorillapod 5K can lift cameras weighing up to 5KG, the 1K only up to 1KG. The 5K is also longer.