In simple terms it is true that an alternate character from hgdgsvhgvuj's blog

Imagine starting as an Mage, levelling endlessly before your new Destroyer class is introduced. You love the design of Lost Ark Gold it and you start up an alternate to try it out. In the majority of games, you'll need to start from scratch and work to get to the beginning when playing as a brand new class.

But not in Lost Ark, where your alt characters are still very closely linked to your Roster, which means that their overall rating increases with each game you play, and even buffing unplayed characters so that when you're ready to change to the role of a Warrior or a Gunner then you won't be lost in the shuffle. The Roster's level is high, which means enhancements to base stats, like Intelligence, Vitality Knowledge, Wisdom, and Charisma all over the board for all your associated characters. These boosted statistics will surely come in handy in exciting new content in the endgame like the recently added Valtan Legion Raid, where you'll need every advantage that you will get to win.

You can earn the Rest Bonus on unused characters

A lot of the rewards offered by Lost Ark increase on a daily basis, and The Rest Bonus can be just one of the rewards. If you're playing one character while your alts recover from the daily content, you'll rack up Rest Bonus points that can be used next time you login. The completion of an Chaos Dungeon or Guardian Raid with more than 20 points in your Rest Bonus meters means higher rewards as well as double loot, and it's not a bad idea to have a few characters jogging around in the meantime.

In simple terms it is true that an alternate character will let you gain more money and loot. Another benefit of this Roster system is that it is possible to switch items out between the characters you have chosen, so long as they're tradable and not tied to one particular character. This is basically everything you receive out of Chaos Dungeons as well as Guardian Raids, meaning that when playing with Cheapest Lost Ark Gold your alts you can then send all the honing materials and gems to your primary character, allowing them to remain buff and enhanced depending on what style you prefer.