This has been an interesting discussion. I'd chime in on a couple of on-going topics:
1) Kwame Brown. A couple pages back, someone suggested that Kwame Brown could have filled Perk's role here. Someone else responded, incredulously, that "Kwame is one of the best low post defenders in the game? Really?". And then there have been a couple more follow-ups, kind of backing off the original statement and saying that Kwame is an ok defender, though not Perk, and then it's faded out.
My take: Kwame Brown COULD have played Perk's role here. I like Perk's attitude and edge more, so I'd have preferred him. But Kwame could absolutely have given the solid positional D, adequate rebounding and defensive role player mindset that Perk gave us.
The problem, IMO, is the statement of Perk being one of the "best low-post defenders" in the game. It may be true, but it's misleading in that it makes that role sound more important than it is. An impact defensive big man isn't an impact defensive big man because of his 1-on-1 low-post defense, especially in this league. There are too few volume low-post scorers for this to be a huge difference maker. Instead, the value in big man defense is in their ability to anchor the defense, providing elite help-defense in the paint. That is NOT the same thing as low-post defense.
Perk is a good low-post defender because he is able to use his low center of gravity, strength and long arms to make post-up scoring difficult. But the difference between he and someone like Kwame Brown in that particular skill-set is negligible in terms of overall impact, because that particular skill set isn't nearly as important in the scheme of things as help defense and rebounding. And in those areas, yes, Kwame is just as good as Perk.
2) Perk's "fair value". Again, interesting conversation, and depends a lot on what you mean by "fair". I agree with those that say that Perk could and likely will get more on the open market than what the Celtics offered him. By the same token, I also agree with those that point out that this doesn't mean that his play actually warranted that type of deal. As I mention in point 1, I think that much of what Perk provided was replaceable with players that would cost much less than what Perk will get. Thus, "fair" market value almost has to be divided into 2 separate categories. Perk's "fair" market value is more than what the team offered. But the TEAM'S "fair market value" for the production that they got from Perk is likely LESS than what they offered him. In essence, I think both sides are right. And wrong. And that at the end of the day, it's likely best for both sides that the trade was made and now each side is free to pursue a more equitable wage per contribution as dictated by the market.