Not many that's why they're steals. 60 point players at 6 million aren't steals.
But I'd wager before the 7 years is up, that 60pt players will be making on average much more than $6.3m. Factor in he'll be in his mid 20s, and to say it won't be a steal if he isn't a PPG player is a bit much.
Currently $6.3m is close a fair price for 60pt centers, to think that the market won't continue to rise as it always does seems a bit short sighted.