I bought Mundus knife from here I was very satisfied of the tool. The blade is really smooth and the balancing of the knife is perfect.
http://shoetechnik.com/mondus-knife.html
I don't think that experience can be compared to copy. Your work will always be better of a copy because you know how to do it and you know all the problems that can occur during the work. They have to study for a long time i think...
I buy from an Italian supplier that delivers in Europe at low rates. They are quite new in online business but I see them adding new products each day.
The site is http://shoetechnik.com