Talk:Summoning Stone/@comment-203.20.238.21-20130725132756/@comment-12812688-20130725140350

30 gems to summon a past boss is correct. You summon it once and when you beat it you get 2 items for crafting it. You must pay another 30 Gems to fight it again. This is past bosses, current ones are just 11 Gems. It can't be cheap otherwise you'd get it at such a low level that there would be no goals to get higher. You'd get bored of the game too fast.

Oh and one good news, the summon monster is level 1 so anyone pretty much can beat it.