User blog comment:Akrie/Supreme Treasure Chest 6+1 Big Set Log/@comment-25889587-20150318041142/@comment-199.202.95.19-20150327180201

To add to the sad stories of treasure upgrade, my first rainbow upgrade to +9 cost me over 3 million. I got like almost 100 mystery gift boxes after that, so I made some coins back haha. the +9 alone took nearly 2 million.