Hey Scotty, took me months to find my NOS F3-P kit The Samba, and that was doing a 'Fram filter' search in the classified once a day! They definitely aren't easy to find is good condition.
Expect to pay anywhere from $280-$450 depending on the seller.
Make sure you get the F3-P which is a nice fit for a Beetle, as the F4-P is larger and tighter to fit!