Jamiroquai - Live At Montreux 2003, the forthcoming live DVD that is released in the UK on 1 October is available for pre-order for £9.99 (GBP) including delivery (UK) from Play.com. Please note that this is a region 2 PAL format DVD release.
I currently do not know of any details to release versions/formats in other parts of the world. As we get nearer to the release we will hopefully know more.
I'm sure as we get nearer to release there will be plenty more deals to be had but 9.99 delivered sounds like a great deal to me.
More information about the release can be found in the original news item that announced it.