Two new freebies on the Sony website I found today:
MAGIC KINGDOM FOR SALE-SOLD! by Terry Brooks
After Ben Holiday purchased Landover, he discovered the magic kingdom had some problems. The Barons refused to recognize a king and the peasants were without hope. To make matters worse, Ben learned that he had to duel to the death with the Iron Mask, the terrible lord of the demons--a duel which no human could hope to win....
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FOR LOVE OF MOTHER-NOT by Alan Dean Foster
He was just a freckle-faced, redheaded kid with green eyes and a strangely campelling stare when Mather Mastiff first saw him an the auctioneer's block. One hundred credits and he was hers.For years the old woman was his only family. She loved him, fed him, taught him everything she knew -- even let him keep the deadly flying snake he called Pip.Then Mother Mastiff mysteriously disappeared and Flinx took Pip to tail her kidnappers. Across the forests and swamps of the winged world called Moth, their only weapons were Pip's venom . . . and Flinx's unusual Talents.
As mentioned by tech_au, the $1.00 June special:
MIDNIGHT NEVER COME by Marie Brennan

Sony Freebies!