If the fees have never been charged before. it may well be that this is one of the "revenue raising" practices now being rigidly applied due to economic pressures in the UK
Like Bogan bear says, no fees are applied in OZ unless over $1000 in value. I recently bought some camera gear from Hong Kong and although the postage was extraordinarily high, the cost of the gear was over 30% less than buying in Australia. The shipment arrived in three seperate packages each costed as less than $1000. The wily sellers (and self unwittingly) had beaten the $1000 clause and it was only then that I realised why the postage quoted at the "shopping basket" was so high........they had already sussed a way to beat Oz rules..............to the customer's benefit, and theirs.