When introduced, the Powerball number was originally drawn from eight numbers, and the minimum prize was $1 million. The maximum jackpot, which initially was $15 million, was gradually raised to $30 million. In October 2007, Powerball was changed to ten numbers and the minimum prize was changed to $3 million. On 3 October 2010, the price per line was raised from $0.50 to $0.60, to cover the cost of the rise in GST from 12.5% to 15%, and to increase the minimum prize to $4 million. In October 2015, Division 7 was introduced and the maximum jackpot increased from $30 million to $40 million. In April 2017, the price per line changed from $0.60 to $0.80.