The first three books in Janny Wurts' War of Light and Shadow series are on sale at Kobo and Amazon (US):
Curse of the Mistwraith $0.99
The stunning first volume in Janny Wurts’s epic tale of two half-brothers cursed to life-long enmity.
The world of Athera lives in eternal fog, its skies obscured by the malevolent Mistwraith. Only the combined powers of two half-brothers can challenge the Mistwraith’s stranglehold: Arithon, Master of Shadow and Lysaer, Lord of Light.
Arithon and Lysaer will find that they are inescapably bound inside a pattern of events dictated by their own deepest convictions. Yet there is more at stake than one battle with the Mistwraith – as the sorcerers of the Fellowship of Seven know well. For between them the half-brothers hold the balance of the world, its harmony and its future, in their hands.
The Ships of Merior $1.99
Janny Wurts’s epic tale of two half-brothers cursed to life-long enmity continues in this spectacular second volume.
The half-brothers Arithon, Master of Shadow, and Lysaer, Lord of Light, have defeated the Mistwraith and dispersed the fogs that smothered Athera’s skies. But their victory comes at a high price: the Mistwraith has set them at odds under a powerful curse of vengeance. The two princes are locked in deadly enmity, with the fates of nations and the balance of the world’s mystical powers entangled in their feud.
Arithon, forced out of hiding, finds himself hounded by Lysaer and his mighty army. He must take to his natural element – the seas – in order to evade pursuit and steal the initiative. However, his efforts are impeded by outside magical factions, not to mention a drunken prophet sent to safeguard his life, but who seems determined to wreck his cause by misadventure.
Warhost of Vastmark (direct sequel to Ships of Merior) is $3.99 Kobo and $3.69 Amazon.
The rest of the series are either $5.99 or $6.99 each
They are not on sale at Sony. Amazon (UK) has the first two reduced but not the third. I didn't check B&N.
These were originally published in the 1990s. I really liked the story, but wish Wurts used a few less adjectives.