Maybe so, but i would be concerned that it would be damaged in transit if it was packed as you suggest,It would be our responsibility if it is damaged due to poor packing. The instructions say it should be well packed in a cardboard box. We sent an awning this way a few years ago and it cost a lot more than £15 .The awning we have is also heavier and longer than the quote you asked for
So at least for now we will stick with collection only