How can we verify that the account is yours and not hacked? What competition did you win this from?
If you have a real offer and I accept it, we can verify it in many ways. Even you can tell me what you are going to need to feel secure in the transaction.
I'm here to make a serious deal, so I can provide for example: all the e-mails I received for the acreditation process, my personal ID's so you can check online and compare, my linkedin profile, we can even make a skype call so you can see me in person. The credit was received from an agreement with a startup acceleration program and Amazon. I'm the CTO of the Startup so it's really easy to check that the account is not hacked.
We have right now another 5k account and this is all we are going to need for a time, so I'm selling this account to bootstrap our Startup with this money, not interested in hacking accounts or something like that...