I like it, but I'd like it more if it printed and adhered a shipping label to itself and scheduled a FedEx pickup after it was sold. Once you saw the label, all you would need to do is put it on your doorstep and wait for it to disappear.
Arranging its own transportation via FedEx would incorporate the printing method you describe, and it could pretty much move on its own.
1. http://www.ohgizmo.com/2010/01/09/ces2010-rca-airnergy-charg...
^ probably vapor, and clearly underpowered, but let's pretend