Hi Andy,
thank you for your posting and your questions!
Import taxes to the EU and the US is 0%, and as posted here:
EU
www.memotrek.com/forum/shipping-taxes-and-vat/13-import-tax-for-usb-flash-drives-to-eu-0.html
US
www.memotrek.com/forum/shipping-taxes-and-vat/23-0-import-tax-for-usb-flash-drives-to-the-us.html
This may or may not be handled similar in Indonesia. Because we don't read Bahasa Indonesia it's not feasible for us to research this on the internet.
You may also want to contact your local DHL, they should be able to help you with more information. You'll find their website here:
www.dhl.co.id
Hoping to have helped you,
and wishing you a nice day!
Michael