Angola? I don't think people there can afford so much money, maybe for money laundrying, or just troll, or scam people's money? If your friend has serious money, should buy it on exchanges, oh wait, the money is black, stolen or hacked right?
That would be the outgoing happen if theres peoplw would bite his what so called buying scheme and 1000 btc is not an small amount and if he really wants to buy such huge volume if btc well he need to go to those legit site who can produce the btc he wants, and by that doing he can avoid those shitty scam people and he can see safely his funds is in his very own wallet.