Been finally reading properly my copy of Chris Bentley's marvellous book, "The Complete Book Of Gerry Anderson's UFO" this week (£1300 hardback on Amazon UK, £495 paperback!

I got it for £11 including delivery when I bought it!).
Chris mentions very early a film called, "Doppelganger", later renamed, "Journey To The Far Side To The Sun", which I understand to be a kind of spiritual precursor to UFO?
Looking around the Net, it's available on Amazon UK on DVD at around £3.30, on US Blu-Ray at £6.40 and, most intriguingly, from Australia from a shop called JB Hi-Fi at £18.62 (all prices including delivery).
Anyone seen it? Your thoughts? Recommended?
If I were to get it, I'm drawn to the Australian Blu-Ray because it's described as a new HD master of the US Blu-Ray, plus some rare extras that you can't get on any other version. But is it worth paying extra for as it's significantly more expensive than the others available?
Thanks!