I work for a manufacturer of higher end air purifiers. Air purification is not a single-problem market waiting for a single solution. People buy purifiers to re

I work for a manufacturer of higher end air purifiers. Air purification is not a single-problem market waiting for a single solution. People buy purifiers to relieve allergies, to generally have cleaner indoor air, deal with their chemical sensitivities, etc. That alone creates the need for a wide range of products. On top of that, user experience is important to a lot of people...so design, noise levels, UX, etc. creates even more options for people. The point being that this inexpensive approach solves a very narrow set of problems...leaving many others that the rest of the industry addresses through a wide range of products (just like any other industry). For example, a $10 phone will work just fine making phone calls...yet people still pay $500 for certain smartphones that do/offer much more.