League of Anarchy Chest can be purchased with 350 Power Gems each.
While the League of Anarchy heroes are quite strong, they are also easily obtained from Challenges and Operations. On the other hand, this chest promises at least 40 gold hero shards, which is unusual as most chests either have a large chance of silver hero shards (e.g. Wizard Chest), or have lower minimum gold shards (e.g. Justice League Power Up Chest). The chest probabilities do not state the probability of getting more than 40 shards, but even at minimum it gives more than 3x as many shards as a JL or Multiverse Power Up Chest for 1.8x the price. However, the latter two only gives shards for those team heroes, while this can give shards for many different and less desirable gold heroes.