I just bought a Summer Sai Uniform Clothing last events, and it adds 673+ power to my character and for the Wild West Clothing which i got from the last month's Treasure of Sage, gave me a total of 462 power .. The Biggest Power Increase i got is from the Anbu Clothing which gave me more or less 1.5k power if im not mistaken .. which i believe you will also get from the Exquisite Silk Clothing ..

I have some fragments of the Fukurokumaru Clothing and Exquisite Silk Clothing now from the Free Dews and Bless of the Konoha Great Tree and hoping to get more next time so that, i can complete them by buying the remaining fragments for lower cost ..