I would suggest they make a second version with 40 - 50 km electric range to have a lower entry price point and let people chose which they want. (greencarcongress.com)
The last few devices decided to forgo this to offer customers a cheaper entry price point. (goodereader.com)
Six inch e-readers tend to be the most popular, because of their pocket friendly nature and low entry price point. (goodereader.com)