Question

I am a publisher on admob and I selected wire transfer as payment option.
Does anyone know how much are the transferring fees ??

Answer 1

they do not cost anything, they are covered by AdMob but there maybe other charges that AdMob do not cover that are outside of AdMob (e.g. bank may charge a fee for converting dollars to your local currency)

Here is more information on the topic

About payment with AdMob

AdMob will cover the fees required to send an ACH or wire transfer.
However, there may be additional fees charged to you for receiving an
ACH deposit or wire transfer that are outside of our control.

Please also be aware that publisher payments are sent in U.S. Dollars,
your bank may charge a fee for converting this to your local currency.
We strongly encourage all publishers who elect to receive payments via
ACH deposit or wire transfer to contact their local bank to understand
the costs involved of receiving this type of payment.