I have an aFe Stage II Si CAI intake with the ProDry-S filter for sale, $250 shipped.
I bought this as a "new, open box" unit a few months ago. Used it for about 3 months and decided I didn't like the sound below 3k RPM, which is where I spend my time, so time to re-purpose the investment somewhere else.
Condition is like new, filter didn't even get a chance to get dirty. All original components are there and ready to go.
One note. Since it was an open box item, once I started installing I found out it was missing the silicone coupler/reducer that went between the TB and the intake tube. I just replaced this coupler with a Spectre coupler from an auto supply store, see pics.