Amazon's Early Prime Day Book Sale has a bunch of box sets for massively reduced prices. While many of the deals are for children's books, there are a few fantasy and sci-fi collection deals for adult readers. On the fantasy side, the most notable deal is The Witcher Saga 5-Book Box Set for only $35 (was $90). This is the best price we've seen in a long time for the slipcased paperback set containing all five mainline novels in Andrzej Sapkowski's The Witcher series. The deal was originally...