^You only need an polish adress..
Is simple as saying: ''hi''
1. at
change to poland
2. relogin in world.needforspeed.com and go to boost store, choose a boost amount and pick a payment method
3. fill the blank of your paypal, search on google for a polish adress and just fill the blanks with the right info
4. the proceed to buy boost, easy and cheap
5. Enjoy!