The rig produces 10W out - you can see a full list of the specs here
The rig is priced at EU499 in the Netherlands, including 21% Dutch VAT.
I've asked Rob if there are plans to distribute the rig in the UK and what the price will be. I'll update this post accordingly when I find out. The PDF also mentions a 50MHz variant, but I'm guessing that the 70MHz will be of immediately more interest.
Updated: Rob PE9PE replied to say that the rig is available direct from the Netherlands and comes with a 2 year warranty.