How much XP & gold do you need to level 20 heroes from 70 to 80?

Current max level is 70 on Server 7 and the next level increase will come. I was thinking about how much gold I can spent now for other heroes or XP Decanter (7.500 XP).

Therefore I did some math. I calculated how much XP (experience) and Gold I would need for my 20 main heroes (part1 part2) to level and skill them from 70 to 80. Sure I don't need all at the first day, but it's good to know how much you need.

Furthermore you need gold for new enchants but you will also generate gold during the leveling process.

YOU NEED
for 20 heroes

6.000.000 XP = 803 XP Decanter (7.500 XP)

42.800.000 Gold

Now I have a good feeling how much gold I allready saved up, so I can spent a little on some other heroes. I need more XP Potions, so I can't spent them now on other heroes, but after I have 50% of the needed XP I will spent a few.

Now a short excursion how to get XP potions and gold.

XP Potions

Events

Contest

XP Decanter from Soulmart

XP Decanter from guild war Rewards

The Summit (4 times per week)

Daily Coliseum reward

Daily Fight Pit reward

Raiding Campaign

Gold

Events

Contest

Expedition Hard (VIP 10: 2 times per day VIP 10, VIP 13: +50% gold)

Crypt (VIP 6: gold x2)

The Caves (4 times per week)

Ore from guild war Rewards

Ore from Soulmart

Most XP Decanter I get from Soulmart (sometimes about 27 for 2.532 Soulmart Tokens) and if you choose from the guild war reward. The most gold I earn from Expedition and Crypt.