The $0.99 offer is back again.
For those who have not tried premium already. $14.99/month afterwards, though you can cancel anytime. Neither prepaid cards nor Spotify gift cards can be used as a valid payment method for this offer.
Previous offers:
December 2018 | June 2018 | December 2017 | June 2017 | November 2016 | June 2016 | November 2015