Yes, I have seen that site. In fact, that is where I first stumbled across it.
To tell you the truth, I had never seen--or heard of--a hammer style saw set. When I first picked it up off some lady's garage floor, I thought maybe it was for cutting saw teeth. What I know about saw sets, you could write on the back of a three cent stamp.
I suppose I will soon find another--and then never see another as long as I live. That is how these things run for me.