I used about 13 double chests of summoning eyes. I placed 2-4 eyes per dragon depending on the party I had. The gear I used was Superior armor with a mythic Black Cat.
Dragon Loot
From all the loot, I made over 1.8 billion coins. The more notable drops are 2 Epic Ender Dragon pets and 1 Legendary Ender Dragon pet.
In the last 30 dragons before I stopped, I got both the epic and legendary dragon pets.
That made me so happy because I had terrible dragon luck in the past. Now the question is: how much money did I profit? I profited over 1 billion coins. I had actually farmed summoning eyes this past week in my free time. I was able to grind about 20 eyes per hour.
I might do more dragons, but I might stop and call it good because I already made a lot of money.