Discovery+ Black Friday 2021 Promotions: Get 3 Months of Discovery+ for Only $0.99/Month Discovery+ Canada has a great Black Friday 2021 Promotions, available now. Get 3 Months of Discovery+ for Only $0.99/Month. Get it all for $0.99/month for your first three months! This offer is effective online until November 29, 2021. Click here to get this offer.