I saw the foot you add to the older walking foot. Cost was $39.95. I was just glad we didn't have to buy the whole foot. Between my Bernina 200E and 830 I have feet of every kind except for my 37 foot. Couldn't find it so bought another but was told if I found it to bring the other back. I have the greatest dealer. Gina's Bernina in Knoxville, TN.