The database of CouchSurfing.com is offered for $700 in the darknet.
CouchSurfing is a global homestay and social networking service accessible via a website and mobile app. Members can request lodging publicly or directly from other members, "hangout" with other members, or join/create events.
Source: https://en.wikipedia.org/wiki/CouchSurfing
The leakage consists of 16,99 million records:
