Maze explanation is here.

Startbonus: 500 coins

Collections: 600 coins every 8 hours Total: 5900 coins

For collecting times check this.

We can also get up to 600 coins from a quest and 250 coins from each set of videos in Dragon TV.

Dragons:

- Trickster Fae #899 - path costs 610 coins

Key for Swamp on step 9 (330 coins) - Swamp #873 - path costs 1425 coins + 1 key = 1755 coins

Key for Prowling on step 16 (975 coins) - Prowling #1159 - path costs 3350 coins + 2 keys = 4655 coins

Key for Natura Magus #1319 - path costs 3945 coins + 3 keys = 7515

Timelimited:

May 12: Dark Cave #608 - path costs 6405 coins

That path holds joker orbs and trading essences

May 13: Elusive #720 - path costs 5830 coins

That path has magic spells and legendary orbs.