Talk:Summer 2015 Crystal Bingsoo/@comment-25386610-20150626183011/@comment-25968376-20150627055854

But is it worth spending hundreds of thousands of coins - or in my case more than a million - just for 3-5 extra Crystals on average?

Edit: I realized I forgot to multiply the average number of crystals per day with the amount the treasure it gives you so the value were off by a factor of 2. This means it's more worth it now to upgrade, but we're still talking about an average of 4 per level.