$100 ....you need to reach $100 before you can get a check. https://www.google.com/adsense/reports-payment Also see "Adsense Payments Help". You will get all your answers there: https://www.google.com/adsense/support/bin/topic.py?topic=136
I think it depends on your currency, I think in euros it's 75€ which is about $107 but always moves up and down.
minimum payout is $100, but I hold the payment until it's a good to see the money. (I am not making a lot with adsense, maybe $100 in 2 month)
Its $100. if you reach this amount on the first month they will finalize it on the first week of the second month and they will send the money on the last day of second month. If you use WU on receiving money its more faster. hope it helps
when you reach $100 or more. Here is more information on when and what date you get paid: https://www.google.com/adsense/support/bin/answer.py?hl=en&answer=21591#3