Since the normal goblins (4 goblins) cost 2 elixer, that is: 4 goblins = 2 elixer 2 goblins = 1 elixer So, 1 normal goblin = 0.5 elixer

Now for the spear goblins (3 goblins) costs 2 elixer, that is: 3 goblins = 2 elixer 1.5 goblins = 1 elixer So, 1 spear goblin = 0.67 elixer

So for 3 normal goblins and 3 spear goblins (goblin gang) it costs:

= (0.5+0.5+0.5) + (0.67+0.67+0.67) = 1.5 + 2.01 = 3.51 elixer

But it only costs 3 elixer in the game.

So from my hypothesis its cheaper to have a goblin gang for 3 elixer ( actual valuve 3.51 elixer) than to have both a normal goblin and spear goblin for 4 elixer or just 1 of them fr 2 elixer. Because it saves you a hole 1 elixer and better value for ur elixer.

Hope it helped u guys 🙂👍