<rant>I'm starting to get really annoyed about the design. The UI/UX in this game is just baffling. So incredibad. Gah. I just want to get one single daily run in, but if you really think I'll subject myself to the scroll-impaired loading hell TWICE just for a quick dungeon run you've got another thing coming. And all of that just because the devs had to develop this game as some fancy webpage. I mean, I get it, it's great for prototyping, but at some point it's just getting annoying.
I also sincerely hope they homogenise the artstyle. Pixel graphics intermingled randomly with HD graphics is just offending my otherwise painfully low aesthetic sensibilities.</>
Anyway, if you're curious about some costs or want to check on the daily dungeon, but are stuck right in the middle of some ten-story dungeon:
Menu->Help->novice's archives->some enemies are too hard
Press on the "realms" button to be taken out of the dungeon, allowing you to freely navigate the "map screen", including special pages like the event shop. To return to the dungeon where you left off, simply tap on the World button. If that doesn't suffice, switch to Party, then World. This will reload the game state from the server and confine you to the dungeon again, right where you were. Nothing grand, but hey, kinda useful if you're on an older device like me where googling some stamina cost or daily list would force you to reload the game.
(I do implore anyone to not play around too much using this bug. Don't do anything you wouldn't normally be able to do, such as actually enter another dungeon or buy stuff at the event shop. This could possibly either break the game or get you flagged for cheating/hacking.)