I sell the NFT's on simple market.
But I am getting 2 epics most times out of the 5 slots I have unlocked.
Back when everything was cheaper I unlocked the slots, also before they brought in the big resting time I had gotten to like 140 kolobloks and a lot had stealth of .80 and up.
So I do the fox adventure all the time, stealth is at .96 or so and gives a 53% chance roughly to win and take the hit of losing a few, but keep breeding more haha.