Knot base 20mm and price $46 Hmmm not a bargain for my wallet. Nevertheless enjoy your brush @mikewood.
To be honest I purchased it used along with a new soap for $20. It's been a good first brush and I have a High mountain knot as a second brush. Also very nice in its own way. But my reason go the thread was to ask if the splaying of the knot was normal. I see that it is. I do enjoy them both but for different reasons. It's a real luxury having multiple brushes and being able to appreciate them all.