Not a bad price either.

https://reverb.com/item/6120187-alembic-sf-2-superfilter

For some reason, I keep getting a little twitch when I see these... not sure what it means. 

Picked up one recently on eBay for $430 shipped. Got really lucky and found the listing shortly after it was posted. At that price I couldn't pass it up.

That didn't last long.  Sold already.