It really comes down to scaling a lot in this game. If you want to progress quick early in, there is some invest into basic Boosts and Codex needed.
You want to be a battler? Or you want ti Tas like mining/fishing/woodcutting? Its a different game depending on your - first - path!
Now I’m lvl 150 and per day I make like maybe couple millions in dust
But it would take me weeks to get one billion