The league isn't as good as it was back then, think Humphries should have transferred from Kentucky to another college where he'd get a chance to play and probably should have done a year or two in Europe before trying to crack the NBA, like Aron Baynes did. If he'd done that he'd be 23 years old with four years of college hoops under his belt plus two years as a pro in Europe, think he'd have been a lot better off.
Plus i don't think NBL players make a fantastic amount of money, I might be wrong but i think the league salary cap is about 1 million AUD, spread that by 11 players and its not a lot of coin. You'd need to be earning 100k in Sydney just to pay your rent and bills. (cost of living in this country is crazy, you'd be looking at 3k a month for a two bedroom dog's box anywhere near the city.)