Hey Linthart, i got it from ebay, and it has all the episodes on 7 discs.
However its region 1, not 4 but my pioneer dvd player is region free so it works fine.
Ive also got the box set of armada and cybertron is ariving soon.
All the box sets are on ebay you just to look under international sellers.
Transformers energon was a complete bargin $49 including postage! and it came in like 5 days!