jrydberg. I think you can forget about comparisons with the U.S. I think that C41 and RA4 chemicals are just much more expensive in Europe and that includes the U.K. It's like petrol/gas comparisons. Ask a U.S member what the fuel costs are for a vehicle for say an annual mileage of say 10,000 miles/ 16,000 kilometres and the costs would seem very low in European terms.
You could hunt all your life and still not find the chemicals at the costs tiberiustibz mentions