Well, I bought the my attachment at Bikerdog.com & it was $55 with S&H included.

Actually riding is very easy with it. When we turn or have to go to the other side of the street I just say "Roxey, right" or "Roxey, left". She finally understands what I mean. I just found this gets her attention & she will look at me when I need her to.

Does this explain what you wanted to know? Hope so!