Suppose I start with a 400 day license. And before it expires I want to upgrade to life time permanent license, would I pay the difference, which is 500, or a full 790 dollars?
如果我先買500 天的許可 Dr Drou 以後再改為終生. 請問是再付 500 元嗎?
This posting serves both as a real question and a test of the HTML editor.