Not a bad deal considering Disney+ is usually $8.99 per month. The cheapest item I could find was this pack from the Playstation store for $6.25 (so basically $6.25 for two months of Disney+).
Subscription can be cancelled at any time and you'll still get the two months.
Beginning November 10th @ 7 pm ET through December 31, 2020, get 2 months of Disney+ on us when you purchase V-Bucks or make any real money purchase in Fortnite — like the currently available Street Serpent Pack. Purchased something earlier this month? We’ve got you covered. If you made any real-money purchases in Fortnite from November 6th @ 10 AM ET, including purchasing V-Bucks, you’re still eligible. Just visit fortnite.com/disneyplus beginning November 10th @ 7 pm ET to redeem your subscription.
In case you missed this freebie - [All Platforms] Free - Throwback Axe for Fortnite @ Epic Game