Chikuhodo Z-10 Eyeshadow Brush is a brush that retails for $45.00.
Z-10 Eyeshadow Brush ($45.00) is a small, tapered brush that comes to a very fine, pointed tip. Its shape is much like a pencil brush, but it's a little larger and feels a bit more like a tapered crease brush. The brush head is made using gray squirrel, and it is 10mm in length, 5mm in thickness, and 5mm in width. It had a total length of 5 inches or 12.5 centimeters with an open, round ferrule. The handle is well-balanced but lightweight, and the handle is shorter than the average brush. The one characteristic about that stood out to me about this is is it never felt sharp, whether held vertically or horizontally, at an angle or straight-on. It's dense but not too firm, so it has some give, which means that despite its very fine tip, it is not as precise as a firmer, denser pencil brush. I really loved it for applying crease color, blending out crease colors, and applying color to the inner tear duct/inner lid with more precision than my typical dome-shaped go-tos.
NARS #12 ($27.00) is a little skinnier, and it is more of a small, tapered crease brush in overall shape, but I felt like it applied and felt similar in terms of density, though it isn't as soft as the Z-10. MAC's 226 ($26.00) is larger with a more severe tapered edge and a greater variety in lengths, and it is, unsurprisingly, has a rougher texture (and there is a lot of variance in the shape, density, and texture between versions of the 226).