Online sales aren't considered 'digital'?
Sales of physical products through online retailers (e.g. Amazon, Newegg etc.) aren't considered digital, no.
I actually have a bit of a pet peeve with the term "digital sales", since a Blu-Ray disc is also a digital format. =P I prefer to call them downloads sales (when referring to game purchases, at least).
One day, thanks to 3D printers, we'll download hardware as well, and then digital sales will be ALWAYS relevant in every context. One day, my friend. One day.
Printing an IC will be something really impressive, but one day.