If I counted, probably about 25-30 left on the shelf. I just picked up another eight filters.... I've sent about 15-20 to 53' Stude, who has been a great contributor to the board. Some of the filters get used for those who need them, and some of the "questionable" filters get sliced open here on the board to help drive inexpensive filter purchases with data, not feelings. I like to give back, and 53' Stude already gives back... it's a great pairing.
With all of the great info from the formulators here on the board to help understand tribology, I am happy that Adam and I can contribute to the "full picture" of oil & filter data here.