I bought the parts from ebay.com (US site)..for $84.99
I am going use oilite bushings/holders instead of PLA bushings. Advantage is, this gives Prusa a much more smoother operation when compared to PLA bushings.
|Prusa Mendel parts with Accessible wade's extruder (on the right)|
|Accessible Wade's Extruder|
|Closer look of Accessible Extruder wheel|
|Another view of the parts|