Board Thread:Game Discussion/@comment-94.212.73.16-20130919191418/@comment-24424436-20140223213128

You have the same chance but if you spend 999 gems then you get more attempts at getting an epic and the gem to chest ratio is cheaper too. 300 gems/11 chests=27.3 gems per chest to 999 gems/40 chests=25 gems per chests