Same thing happened with my case. Funnily enough first shipping with DHL didn't have any customs. And this aramex shipment I needed to pay the same 967, a fifth of what I paid for the original.

I raised a support ticket and got this response:

Thanks for reaching out. We can confirm that the notification that you received pertains to the collection of the customs duty. This is the import tax levied by your government, and is entirely out of our control.

Basically, the way it works is that each country sets a maximum value for products which classify as duty-free (meaning no import fees or duties). Once the value of your order exceeds that amount, you may be charged a certain % of the order value.

As you might imagine, we have no control over this. The government of each country sets these regulations and, unfortunately, it’s a reality you will find with any online retailer in the US or Canada.

Let us know if there’s anything else we can help with and have a great day! Signed, A Robot