This thread is moving too fast for me to backtrack so my 2 points below may already have been covered:
1) CPW have 3 for 2 on accessories, and HP items seem to be included in it. Basically you don't pay for the cheapest item. I bought 1 touchstone (£35) and 2 official cases (£17.50 each) and only got charged for 1 case. Might be a good deal if you need multiple accessories (The keyboard or international charger was also included, but I did not want those).
2) Can someone summarise the "dodgy HP link" details? Is it people somehow managing to order off the EPP scheme, without being employees/affiliates at a low price?
rp2000