Cant find the cave! or the bandits

I cannot find where the theifs are!!! this is very fluxstrating to me right now because i need 2 more dreamstones and plus i know the fairys may have something to do with the earthstone key thing!! i need hints/tips on where the earthstone key is and where the bandits are! (yes i went to the earth temple the right way and found nothing)

If you’ve already gained access to the Earth Temple and defeated Muriance’s bandits at the entrance, than you will have gained a Bandit Key. Take that key and go to the Aeropolis Slums. There is a bandit store there that you access using the Bandit Key and it sells all of the fairies, although they’re fairly pricey. 40k each if I recall correctly.

and yeah the price of the fairys eh no matter i have like 7gold couches or so lol xD and a few elixers

Because that covers 200k.. right?

yeah i figured out what to do thanks for the help !! XD