We charge taxes in all locations in which we have fulfillment facilities, and in areas where law dictates taxes be charged prior to purchase.
If you live in the US state where we have a fulfillment center, we'll show you that charge prior to payment. In Europe, you'll notice a VAT charge appearing in the total before payment as well!
As of July 1st, 2018, we have begun charging Australia's 10% GST(Goods & Services Tax) to all orders shipping to Australia.
All taxes collected at checkout go to the government, not us(!), so unfortunately we're unable to refund these charges for you.