Buy a safe. Big enough to not only hold your chip collection, but also everything else you consider important. You pay for it once. You pay monthly for insurance and safety deposit boxes. A good safe can't be removed from your home by cat burglers, will protect your valuables during a fire, and still give you easy access to what you have. (I know, a guy points a gun at your head and says "open the safe". What does he get by pulling the trigger?)

Just my opinion,

Bob