B9180 in the UK
Neil - yes, the constant 'clogs' are very frustrating and wasteful of ink. However, I get the feeling that most of what I experience is not clogged nozzles per se, but lack of ink to a particular head due to either an air bubble or possibly an ink pump problem. Whatever the cause, I'm fed up with it now!
Brian - looks like it's popular already! I'll call them tomorrow and find out when they may get new stock.
Waveney - the cartridges are £16 or £17 + VAT on the HP website, but not all colours appear to be available yet. I guess prices will settle down a bit once the stock becomes more widely available