Pretty much anything KM around here will get good, positive reviews. I don't think you can go wrong with the Kafe. Shishabuzz is a very popular vendor in the UK and I think you'd be in good shape purchasing from them. If it meets all of your standards, I'd say go for it! As for purchasing from a vendor in the US, I highly doubt you'll be able to find a place where shipping to you will be in the area of $30. I don't know firsthand, but everything I've heard about shipping to the UK from the US is that it is very expensive.
If you have any other concerns or questions, I'd definitely check out this thread and then defer back to members for any other questions you have.