Hero lottery event in aowe may can make you fall for any particular hero, but 99.99% time it won't give you the one you really wanted, so you will go for roll after roll and this is the total gold coins amount on each try you will have to spent.
Hero lottery prices:
1. 150,
2. 250,
3. 500,
4. 800,
5. 1000,
6. 1200,
7. 1500,
8. 2000,
9. 3500,
10....