Maze explanation is here.
Startbonus: 400 coins
Collections: 600 coins every 8 hours (5400) = 5800 coins.
The total does not include coins we can get from quests or dragon tv.
For Collecting times check this.
Deus Pet -R- #203: The path costs 860 coins.
Double Ice -VR- #277: The path costs 2825 coins + 1 key = 3285 coins.
Rideable -E- #587: The path costs 3630 coins + 2 keys = 6005 coins.
Noble Blue -L- #1636: The path costs 6020 coins + 3 keys = 10830 coins.
Feb1-3: Spiderknight -L- #711: The path costs 8165 coins.
Feb2-3: Tsunami -L- #870: The path costs 6720 coins.
The colors on the table are the colors of the paths in the game.
Yellow fields hold Infinite Shells.