I got charged £3.25 in Import VAT for my order, which wasn't too bad, but then Parcel Force automatically slap on their own £8 administration fee any time customs levy a charge, which frankly is disgusting. Now I've ended up paying £11.25 to get something that was supposed to be free, which is a little disappointing.
I asked other people in the UK before I ordered, and they said they've never been charged anything when receiving stuff from here, so it seems like a bit of a gamble.