Browbands come in two styles, woven (wide) and braided (slim). Woven browbands (pictured in four different styles below) are £35 including UK shipping for any size or design. Various designs are possible, have a look at my dog collar range for images of differen weaves that could all be used for browbands. I've more recently started using Biothane loops (see last pic) instead of Paracord, which are provide a more secure fit.
Slimline braided browbands can incorporate up to four colours and come in only this one braid style (for now - I may trial other styles over time). Slimline browbands are £18 (including UK shipping) in any size.