Not every site gets sandboxed - I've had sites that have ranked well right away and stayed there, as well as some who have been hit pretty hard by the sandbox
You know with my site I have really been getting the sand box and reverse. I will hit the top ten in my fav keywords then the next day not be in the top thousand though what I am finding out as the time passes is that slowly fades.
None of my comercial websites escaped sandbox. I saw impressive changes in traffic and income after approx. 7 - 9 months of creation.