Why is Nokia E Series low on Sales than N Series?

I have observed that Nokia Eseries phones are equally feature rich as Nseries Phones and are even cheaper than Nseries,but then why are Nseries phones so popular but Eseries low on sales volume?
What do You Think?

---

› See More: Why is Nokia E Series low on Sales than N Series?

I think Nokia N series is a older then E series. In our country (like developing) new product is take time to sale. That is why Nokia E Series low on Sales than N Series.