Last July 1, 2010, I bought one box of 08-09 SPx along with three other unopened basketball boxes from Dave and Adam's Card World.
Each is guaranteed to contain one autograph or memorabilia card.
These are what I got:
I like the design of the base cards. They're acetate.
The jersey cards
* Chris Paul / Deron Williams Winning Materials Combo
* Detroit Pistons Stuckey / Hamilton / Wallace Winning Materials Trios
* Michael Beasley Freshman Orientation
* Russell Westbrook Freshman Orientation
* J.R. Giddens Freshman Orientation
Kevin Durant Winning Materials
Paul Pierce Winning Materials
Rookie cards
* Kyle Weaver Home #d/599
* Kyle Weaver Away #d/599
* Chris Douglas Roberts Home #d/599
VERDICT: ****** 6 out of 10 stars!