我在亚马逊买到过的书有几百本吧,没发现过有盗版的,因此我个人认为他家是可以信赖的。在亚马逊购书可以补开发票。但是手续有些麻烦,您可以阅读一下亚马逊网站-帮助中心-发票制度说明-补发票与更换发票说明
I have bought hundreds of books from Amazon and never found any pirated books, so I personally think that they are trustworthy. You can get a re-invoice when buying books on Amazon. But the procedure is a bit cumbersome. You can read the Amazon website-Help Center-Invoice System Description-Instructions on Re-invoicing and Replacing Invoices