Carl,
I bought mine a couple of years ago from a float maker who lives in the West Country and paid about the same price as those on the Somerset Willow web site.
I'll try to find the information and let you know.
I agree with you though, anything with the word "traditional" in the title does tend to cost a lot more.
See if you can find even a reproduction of a "traditional" landing net, of the type Bernard Venables used, for less than 150 pounds.