You can try
www.negrielectronics, they had some and ship anywhere. I bought a phone from them once so they keep sending me those e-mails. They are reliable and you can probably save quite a bit by buying from them and shipping to Taiwan. Or you can buy from Apple USA directly and use a service like
www.shipito.com. They will give you a US address and then they will forward it to you, that is how I got my Irex and other items. I live in Taiwan, too. Customs didn't charge anything for my Irex, even though I had the regular invoice included with the shipment and the price is only 100 US less than the 16GB Ipad.
Either way you will save a bundle compared to the prices mentioned. Shipping charges shouldn't be more than 100 USD.