Where can I see how many Power Stones upgrading treasures costs?

Help me :)

When you tap a treasure it will show you how many stones it takes for upgrading it on the upgrade button.

:facepalm:

I had it in german and Its not shown how much it costs there.

I had it in german and Its not shown how much it costs there.

If u try switch language to English u can see. And ofc it's not a single unseen option, u can find a few more