why not make a new storage but 100g comes out of your cash everyday to maintain it and this can run in conjunction with the free storage account, sorta like a bank account :P banks make money off you, be nice to see a xunlai agent wearing something new from everyone elses hard earned cash
you dont need so much money as to require another storage vault. Even if ur sitting at 1 mil and haf nowhere else to go, just buy ectos, as they're the next highest stable economical currency. one stack =250 ectos = 1.5-2mil