I do believe that our Extruder base printers are pretty much at the end of its life,

It wont get any cheaper then 500 dollars just due you can't compromise the stepper motors and such you need to use,
The quality is very limited aswell is the speed of these devices and its makes quiet some noise.

Probably the future as 3D printing goes will be with resins or powder for example,
Even though i doubt Powder printers will go off the shelf for less then 5000 dollars.
Peachy is a nice try to the right direction, even tho it needs some adjustements so would be more quality.