Hey guys!

I have a big list of all upgrades from the blue/purple/gold summons

All the stats provided and the unbound runes/coins cost of each upgrade, with the total costs also

Summon Cultivation Stats/Cost (Blue Summons)

Summon Cultivation Stats/Cost (Purple Summons)

Summon Cultivation Stats/Cost (Gold Summons)

Secondly Purple Summons !

So at end you have the full total cost and stats gain from Purple summons

Considering we have 13 Purple summons in the game to cultivate you can multiply the stats/cost by 13x

13 x 11360 = 147680 unbound runes needed to max all purple summons = 147.680 coupons/ingots (if you were to buy all at full price)