Delivery times vary based on the country you are in. For example : One of our suppliers happens to be based within the United States which means, customers in neighbouring states receive their purchases within 3 days.
On the hand if the same supplier has to ship internationally, maintaining a similar delivery time would in most cases involve increasing the price to 2, 3 or even 4 times the value of the actual product price just to pay for the shipping cost. With that being said, a $9 product in the United States might end up being $27 in the UK. In order to keep the same price worldwide, we choose the best low cost shipping options available to us but the delivery time will increase, especially for remote locations.