My next words are going to sound as obnoxious but what does define a phone as decent?
Used market in my country is simply ridiculous; people are asking for used phones as if they were new. The people I know all use their phone until end of life.
I need something that can take a visible picture from less than a metre away, has a flashlight function, can handle WhatsApp and a screen large enough I can use to read documents on it and look at aerial photos. Nothing special. And I need it cheap. It is going to be outside, going in and out of pockets, handled with dirty hands, etc.
I have a Fairphone in my eye for personal use, hopefully sooner than later, but that is a purchase I want to make to last me for as much as possible. This is not the case.