Board Thread:Questions and Answers/@comment-73.32.179.25-20160527214429/@comment-26044650-20160527220445

You're going to eventually have to buy more and more space for your treasures to be able to unlock Cookies.

I would suggest you hold onto the treasures you don't need until the next season because in the next season you can extract the treasures into purple crystals which are needed to be able to bless treasures you want blessed (you'd need 1,000 purple crystals and 99 crystals to do so, and extracting treasures gives a various amount of purple crystals, S rank treasures giving the most).