Coolababy pockets are now being sold through UK vendors which seems like a pretty good endorsment - and they're only 5.50 each plus you don't have to fork out for overseas shipping.
Babybots.co.uk sell them, plus another website are taking pre-orders but I can't remember the name!
I would go for Coolababy if you're after cheap nappies, they've been much more widely tested and have received a lot of positive reviews. And for 5.50 a piece, you don't have anything to lose by giving them a go!
I've been meaning to try them out for ages, seems like a good way of building up my stash X