I'm coming to the end of my old prepaid NZ post labels - the ones with maximum dimensions printed. Just wondering what other sellers thoughts are regarding the best value at the moment to send a large trade paperback or two? It used to be you could send two with a C5 label provided they weren't too thick but now with the postage being required to fit in the bag which only accommodates the thinnest of trade paperbacks or to use the volumetric weight it's not so simple.