Where to get a few double boxes for shipping CD's (as many as 200 per box)

Years ago, when CD's were still the dominant format by a good margin, I remember seeing that they were shipping in these long boxes that fit probably 200 each, and they seemed to be double boxed, where you had one box that fit perfectly inside another, producing a double wall of cardboard around everything.

Is there a good place for consumers to buy this packaging, especially if you need only two or three double boxes (if they're big enough to fit 200 discs)? I definitely want the double box design. I think I've found single-box designs but not the double.