Heres tip how to save on platinum always:
DONT use google play or AppStore
using them you will have same rate in euros as in USD and at this moment 100 USD = 80 EUR, so you will save money by using paypal convert your euros to USD and buy platinum from pocketlegends.com (or google pocket legends, go to site and press buy platinum).
Also buying from either mobile stores includes in app purchase fee that paypal will not include.
Hopefully this will save some money from everybody!