Actually it depends on the experiences of the helper, for my example, two years ago it costs around $10,000 and as this time I want to booked and she already full la....I will give birth in June next year but she already full in November....it's fully booking for some really good helper in fact...
And then I booked another helper which recommend by my friend and she costs $9,500, and the working hours is 8 hours....of course it only the salary you need to pay the transportation fees....