I have a hoodie just like this one I purchased it at Aldi in the early spring. It was on sale for $8
I adore having the half mitt hands but I don't think Will's and Kate's were styled this way. You can see the cuffs on Will's here.
I found this picture online and I really don't think that they are mitts, but I could still be wrong. We shall wait and see.
Target has a non colored Replikate for 22.99! Shown here in pink but available in black.