From your explanations so far i know that this email list is cryptocoin related and it could be a real money making opportunity but 0.03 btc is a lot of money for only 1000 lists because less than 5% of them will actually complete the purpose of the marketer.
Have you in any way try to advertise anything to them ?
What I meant was I will show you the way on how to get that traffic which will help you in building 60+ email lists for every 2$ so you can see that you can make big email lists through this source and then you can start you email marketing with any auto responder .
What I will be revealing is the traffic source and capture page which you can use for best results .
Hope I am clear now .
And yes it is crypto related .