These are nice little starting points for adventures, but just about all of them will require some work from the DM to fit them into a campaign. Each hunt is presented as 3 short paragraphs of text - the bounty advertisement, a description of what the creature actually is and why it's there, and the loot/rewards. I introduced two of these into my campaign. For one of them I reflavored the cause of why the monster was around in order to tie it to a character backstory. Two hunts filled out a single day's gaming session nicely, and the characters were interested in following up on the causes - leading to more story.
Monster stat blocks are not included, and slightly more than half the monsters are either in Mordenkainen's Tome of Foes or Volo's Guide to Monsters.
[4 of 5 Stars!]