說的不是特別準確，看看原文吧，我是perm file

In employment immigration the priority date may be the date the labor certification application was received by the Department of Labor (DOL).

這是USCIS的原話。我屬於是perm那種，所以應該是LC遞交的時候就是PD。關於收費漲價，那是八月十八後的事情，隻要是八月十七前交的就是老的收費標準。不信大家看官方的文檔。