Maze explanation is here.

Start bonus: 400 coins

Collections: 600 coins every 8 hours (5400) = 5800 coins.

The total does not include coins we can get from runner, quests or dragon tv.

For Collecting times check this.

*Dragons:*

Zombie Flame -R- #1192: The path costs 860 coins.

Bookday -VR- #270: The path costs 2825 coins + 1 key = 3285 coins.

Dark Angel -E- #343: The path costs 3630 coins + 2 keys = 6005 coins.

Gothiquette -L- #1576: The path costs 6020 coins + 3 keys = 10830 coins.

Timelimited:

Sep14-16: Book -L- #1058: The path costs 8165 coins.

Sep15-16: Purple -L- #1489: The path costs 6720 coins.