From Last Outlaws Online

eCoins Level 1 eCoins are used to eliminate the wait times between battles, between healing your characters, or upgrading your buildings. It is also used to purchase Rare Weapons from the Dealer.

Obtaining

Purchasing

Shop Sales

Your Dealer will occasionally offer a sale on eCoins Level 1 eCoins, where you can receive 100% more with each purchase. This usually occurs before an upcoming Conquest, where many players prefer to use their eCoins Level 1 eCoins to heal instantly between battles, allowing them to rack in more battles versus having to wait on characters to heal organically.

The highest quantity of coins during the sale, for instance, will give you eCoins Level 160,000 instead of a normal eCoins Level 130,000, and an additional eCoins Level 16,000 if you've purchased a VIP Pass.