I bought items worth over £50 and choose global shipping but was told to pay custom fees when it arrived at UK. I contacted iherb and they were very helpful and advised me to pay the money and that they will refund 50% of the custom fees. Which was £16.24. I paid received the item and sent them the receipt via email and the 50% refund was processed within 48hours.
I have also bought again from them but this time the total cost of my item and £2.72 shipping with my discount was £11. The item came straight to me without custom fees. I am very happy with them because they are way cheaper and some of the supplement are not here in UK.