The sweet deal are the workshops. Basically you get 2 rounds of feedback on your 1st chapter (character voice), 500 words summary, Blurb and Logline/pitch. It's worth a LOT, particulary on the 500 words. In my experience, 500 words abslutely have to be read by someone else to help only get the main story and take out everything that only a writer can understand.
If you get a mentorship, you get a beta-read from a popular writer, so that's worth even more to me, because I struggle with writing books that appeal to others.