What's a roach motel? This dark pattern is usually used for subscription services. It is easy to sign up for it, but it's much harder to cancel it (i.e. you have to call customer support).
Canceling a subscription should be simple. But often, it’s not. The user experience design that promises ease and transparency can sometimes serve other purposes, like making it harder to cancel a service.
The New York Times "successfully" uses the Roach Motel pattern by making the subscription process very easy but the cancellation process much more complicated.