Personally, I think a nono to cheap ones; this is a thread for you to discuss this.
Have a look at the 3D printer that runs on stereo created by Blender. What is the point - it is really small ad therefore prints small things. And the quality? I don't think the quality is too good. On the other hand, it can be great for school kids to play around with it, but not for adults.
Moving on to the Makibox printers. For me here in England it would cost me £110 including filament. However, if I want to upgrade it, I will need an LCD (aprox. £40), plus a heatbed (aprox. £20), plus a second hot end (£30) and the hardware e.g. Greg's extruder plus stepper (£30) and then the electronics for up to three extruders (£60) from printrbot (though I can no longer find it).
So: £110 + £40 + £20 + £30 + £60 = £260
Well, I can make a 3D Printer for the same price:
Ramps 1.4 lectronics including LCD and Heatbed (£96), Frame (£50), Dual extruders including stepper and hot end (£100) and all the steppers: £40
This makes £286. This is a £26 difference, however is it really worth it?
I think so because you have to wait 7-10 weeks for the lead time of the Makibox Printers excluding delivery! If you buy all the items above, you can get everything much faster!
What do you think?
Tim