[Sarinpa1]

You have the possibility to earn money without fighting. Just visit a few resource nodes.
As far as I know, minibosses should not appear at extremely low levels.
So I don't really see a reason for this.

Edit : Also as far as I know the mura reward increases as you fight higher level monsters. Therefore the whole necesity to make a few noncombat mura earning runs for someone unable to get through jammer cavern is a matter of two-three runs.