Actually, if you don't include the allstar* guy, you'll find that the vast majority of center/big men have salaries in the 50K range. SOme have salaries in the mid 60K, and I found 1-2 at 70K, and one dude who was like 115K.
What is more relevant than actual salary however is the total number of skill points. If you go through and add those up, you'll find that most big men have 70-79 skill points. THis was even true of the 115K guy: he had huge primary skills but really awful secondary skills.
That being said, seeing as the OP's guy had 61 skill points, it seems safe to assume he hasn't completely capped.