https://openpleb.org/

https://www.reddit.com/r/mullvadvpn/comments/1l6r7bw/billboard_spotted_in_california/

https://www.reddit.com/r/mullvadvpn/comments/1l1lpnz/mullvad_bus_spotted_in_central_london/

https://www.reddit.com/r/mullvadvpn/comments/1kugm61/found_in_the_wild/

https://www.reddit.com/r/mullvadvpn/comments/1kp8e92/a_good_reminder_of_free_speech_in_uk_is/

https://www.reddit.com/r/mullvadvpn/comments/1knp3jl/ad_on_broadway_nyc/

https://www.reddit.com/r/mullvadvpn/comments/1kefzu3/mullvad_going_mainstream_will_it_stay_safe_or/

Check their reddit for all the threads with pictures of cities plastered in Mullvad billboards. Then you know why others are cheaper.