Phil Wood is an USA based engineering company that makes handmade bearings-related products like bottom brackets, hubs and cogs along with other parts. Their hubs especially have acquired prestigeous status in recent years through their use by tourers, cyclocross and track community. There are different prices for any variation of the hubs. They use the classic opposite threading cog/lockring system and they are simple the best out there. Available for 540 euros in black (single sided fixed).
Many thanks to Vangelis Paravas for these amazing photos.