150$ Bitcoin mining contract - get 1 chance to win prizes
$300 Bitcoin mining contract - get 4 chances to win prizes
$500 Bitcoin mining contract - get 10 chances to win prizes
$1000 Bitcoin mining contract - get 25 chances to win prizes
$3000 Bitcoin mining contract - get 100 chances to win prizes
ASIC - get 150 chances to win prizes
$5000 Bitcoin mining contract - get 200 chances to win prizes
$10000 Bitcoin mining contract - get 500 chances to win prizes
The winners will be selected using a randomizer