Hi BigshowZA,
I am building the Mendel90 and all the parts I got from my hardware & bolt & Nut place.
The other parts like the Hotend you can get from http://www.diyelectronics.co.za
The Printed parts I ordered from a guy in the USA.

The Prusa i3 is a excellent printer and you can get the printed parts from these guys aswell.

Vaughan