Buying Items From eBay, Shipping to Saudi Arabia?

I'd like to buy a few electronics from eBay, shipping to Al Khobar in KSA. I'm an Indian, for that matter. I'm just 15 and I'm gonna ask my dad to place an order, But before that I'd like to know the customs duties for these stuff.. I'm looking for a good pair of earphones that's not available here... Any suggestions/Advice? Something that i should be looking out for?