Talk:Supreme Treasure Chest/@comment-116.87.228.43-20150208082359/@comment-70.51.29.189-20150306124341

I buy the 7 treasure set exclusively. after over10 buys, I got as many as 6 S-ranks in one buy (not during higher chance event). I think the average is slightly under 4. I think overall, the chance of S rank versus A rank is comparable to just getting single chest. However, the cost is much lower, especially if you get redraw (for 108 or 105 I dont remember). 119 for 7 treasure is about 17 each while redraw is  almost as low as 15 each. What I do is save up enough crystal for initial buy + 3 redrawls everytime. So that's 443 crystals for 28 treasure at 15.8 each. just make sure you have the room for all of it.