They've run a similar deal before: https://news.ycombinator.com/item?id=6933716 https://news.ycombinator.com/item?id=6933716 It seems like the quality is hit-

They've run a similar deal before: https://news.ycombinator.com/item?id=6933716 https://news.ycombinator.com/item?id=6933716 It seems like the quality is hit-and-miss - it's probably a good idea to look up reviews/authors.