I was thinking, judyb is probably in a sort of precarious situation where she needs to balance not promoting her product openly but at the same time logically not promote a competing product. I think part of the problem here is that, most of us are in the US and the sheer cost of importing the product she sells is a PITA.
So probably the best she can do is give vague leather care advice where she is sure not to point in any products general direction.
However she does seem to post when she sees a comment which she believes takes leather care in the wrong direction. That's very good.