Every 500 coins is worth approximately 1.65 keys (or 20 keys will get you 33 chests if you buy new keys with the coins you get from the chest).Ĭomment by oscarucbThis pet is amazingly handy for certain dragon fights (notably Yu'la, Broodling of Yu'lon). Using the return of approximately 325 coins (based on my average and others' averages), each key theoretically costs only 175 coins, which means that 100k coins on 200 keys will actually result in, if reinvested, ~570 keys. This differs from my actual return, as one method uses sum while the other uses average. The average return was 323 coins (based on the sum divided by the number of keys), which means if one spent 100,000 coins on 200 keys, they would receive, on average, 64,600 coins in return (or 56k coins using my ROI, resulting in a lower 280 coins returned per key). I spent ~49,500 coins on keys and received 27,751 coins in return, for a ROI of 56%. 11 (11.11%) contained various armor items (all types of specializations).