The compare base packages page says that the Platinum includes "Pillar New Testament Commentary (10 vols.)":
Compare Logos 4 Base Packages
The only Pillar Collection that I can find includes 8 volumes:
Pillar New Testament Commentary (PNTC) (8 vols.)
Are there two more volumes included in Platinum that are not in the Pillar Collection above?
I'm planning on upgrading to Platinum sometime next year, and I'm considering picking up some of the Pillar Commentaries that I wouldn't get with Platinum during the 2010 Christmas sale.