Above Polish copy refers to english version as below:v
You’ll still make it before Christmas.
Take advantage of the promotion and get a phone as a gift with a discount of PLN 10/month. for a subscription in the L Unlimited offer. Extend your contract today and have peace of mind. Check. The lowest subscription price in the last 30 days before the introduction of the discount is: PLN 90/month. (price for customers without the Benefits for Home offer).
Source: T-Mobile Mobile App.