Here is the hobby 3D printer that I have crowd invested in and soon to be shipping out.
Basically $300 for the printer and $50 in shipping any where in the world, at this price I thought why not.
It will use the standard 1.75mm filament and you can use any of the free software to drive it. (ReplicatorG, Slic3D)
check it out if your interested,
Tom

http://www.makible.com/projects/7-ma...top-3d-printer

Ps - This is a hobby 3d printer and will not do what the $30K printers will do...just thought I would add this to possibly head off the statements and questions regarding printer resolution. This will do the same as the printerbot, makerbot, mendelbrot, prusa...etc.