I would not classify these boxes as rare by any means. Whether or not you could find any you would be happy with depends on how import “mint” is to you and what your definition of “mint” is. Once opened, the boxes are simply not mint condition anymore. Between the way the labels were put on and the shape of the plastic latch they cover, once the label is cut, no matter how carefully, “mint” is a thing of the past. Empty specimens of these should not be expensive if you find them, though, at least in my opinion. We’re not talking pre-WW2 boxes or boxes from exotic countries from which it is hard to find anything, with these boxes. They are just very modern, mass production commercial boxes.