It certainly seems that way, there is no easy way to buy their DVD's over here and certainly they don't seem that interested in the wider audience, this may be in part due to the fact that quite a bit of the information is region specific (although the techniques have broader applications) and perhaps because much of the UK audience would squirm at some of the food preparation/ trapping footage - it's not quite as sanitized as RM would present for instance.
I watched pretty much all the DVD's so far and I have to say there are some real gems of info in amongst the footage, from the traditional preparation of pemmican through to simple but efficient ways to navigate around the wilds. I'd love to see him promoted more this side of the pond.
As Spamel mentioned, his approach is casual, relaxed and delivered with humour. His wife is also sehr hot and as my brother referred to her, very game ( I think he means she gets stuck in!). On the whole though it is more a 'survivalist' approach than 'bushcraft', there's a lot of tinfoil used, plastic bags and the like rather than relying on natural materials, but IMHO the good points outweigh the bad (you can often substitute natural or more reusable materials for the placky bags etc.).
The URL to read more about Ron & Karen Hood is:
http://www.survival.com