First and foremost their customer service is incredibly slow and when they finally email you back after you email them a few more times they will claim that you didn't get their first email every single time.
second, they send you old books. They send you books that are at least 3 years old and have absolutely no resell value.
third, don't order their "teenage dream" box expecting to receive contemporary books like the little picture shows. Instead, they send you sci-fi books.