Just speaking for myself, I would pay in the extra money very willingly to get better build quality. And that goes for literally any device - computer, printer, car, tv.....I would even pay more to get a lawnmower that is solidly built.
The Afrikaners have a very good saying....goedkoop is duurkoop !!!
All of my iPhones, going back to the very first 2G model are still working like new, and still use their original battery. Although they have now been relegated to being used for entertainment, connected to my home theatre system......at least they are still serving a purpose.