Is Amazon back up to its old tricks?

It's gift time again (for me that is!) -yey! But when I was checking out on Amazon.co.uk earlier today I was a little puzzled by this...

On the product details page it said £4.45 shipping (correct me if I'm wrong)

But then when you check out it's suddenly £7.36. I was checked in by this stage so did Amazon think I was prepared to pay for Express Shipping? I tried to change it to default shipping (as they often upsell) but I couldn't.

.most odd.