Trying not to ruin it for myself but im wanting to max storage on my main plus 1 atlesst with something left over.. I think the cost of maxing storage has been reduced.. thinking a minimum of 1mil depending on price
Right now there is a night market event, make sure to participate to get a free large house. After that you can acquire crafting writs and buy some extra chests you can place in your house and store stuff in. Only negative side is that you have to travel to your house (I keep impen, and extra divines/sturdy monster helmets/shoulders in mine as I usually don't need them frequently but don't want to throw em out)