$35 for your first year of membership, and $59 in subsequent years. Memberships include a free two-week trial.
If you purchase Slate Plus through Slate’s iOS app, there are a few differences in how memberships are priced. At this time, the introductory $35 rate is not available through the app. A monthly membership is offered for $6 per month. And annual memberships purchased through the app include a free 30-day trial.