I'd like to know that can France citizens apply for online visa and stamp at the airport? And how much it will cost including processing fee?

How much a visa to Vietnam costs from the embassy in Manila these days. Last time i went there was 2007, it was 50 dollars and was very quick. 

I am Vietnamese and my wife is Canadian. We have been living in Vung Tau city for more than one year. We have long-term investments in the country and I would like to ask about the registration procedure of permanent residence for my wife. Is she eligible for registering to be a permanent resident? If yes, what should we do?