I don't agree full with this MRU. In every almost every industry there are similar products in different price ranges. Usually you have the most expensive, midrange and lastly the cheap / low priced.The flaw in this discussion is the word 'affordable' as it is liquid and unquantifiable.
What people seem to be doing is quantifying their own definition of affordable, however it then is merely personal & subjective and can not be generalised or assigned a fixed metric.
Making any assumption or declaration about what is and what's isn't 'affordable', and theoretical assumptions based on that, utterly moribund.
Now when we refer to the general public (lets call them GP), majority of GP lies in the middle to lower class income levels. Now usually this majority tries to balance value, quality and cost. They don't want something really cheap because of the mindset "you get what you pay for". They also don't want to buy the most expensive when they think they can get a similar product for less.
So "affordability" when it comes to the majority of GP imo usually lies in the midrange for different products in a particular industry. Of course there will be exceptions but imo this remains true in most instances.