depends how smart they are with their money
When compared to other Australian sports, not the NBA, they earn much less on AVERAGE than players in the NRL, AFL or even the A-League.
Some of the players are not on top money their entire career, then there are those who's careers do not last very long
If you were to go around to the top name guys who are now retired after 10year plus careers in Australia to see how they are doing, comfortable would probably be their lifestyle, but I know a few who are working really hard for money post retirement and their names even surprise people to think they wouldnt be well off.
In the long run, the money they make does not set the up for life. There is not on Australian basketballer who could retire and just enjoy retirement, the all have to work in some way to survive, just like Andrew Gaze who has done fantastically with his opportunites and probably makes more now commentating than what he did as a player.