That 20% VAT exists for a reason. I've lived in the US and in Europe. I've budgeted in both. I've also had friends that came over and visited and were astonished by the cheap price of one thing or another. They sobered up a bit when I pointed out things like the cost of education and healthcare.
Anyway England and Australia are islands. Not sure how much that factors into it. I know that on mainland Europe there are some deals to be had. A friend of my actually stocked up in Germany on Agfa APX. They picked up some HERE.