Stephen Wolfram has made his crown jewel creation Mathematica available for free for the Raspberry Pi OS Raspbian. (See
https://www.wolfram.com/raspberry-pi/.) That combined with the release of the more powerful Pi 2 early this year convinced me that I should get myself a Raspberry Pi 2.
My questions, especially to Aussie Raspberry Pi users, are:
Where should I buy one? Ebay sellers okay? (I am in Melbourne.)
Are there any particularly badly made versions/"clones" I should watch out for?
I have never used a Raspberry Pi (v1 or 2) so any other tips would also be appreciated on: power supply, SD card choice, case..?
(I'm an experienced Linux user so I expect the software side of things is going to be relatively straightforward.)
Thanks in advance. Cheers!