If you spend anytime on the Splinterlands subReddit, I'm sure you've seen many posts from newer players asking if they should rent additional power at the end of season to claim the extra rewards chests that higher tiers bring. Being only in my fourth season of Splinterlands as a newbie, this is a question that I also wanted an answer to.
**TLDR: Bronze I End of Season reward chests are on average valued at $1.89, whereas Silver III End of Season reward chests are on average valued at $3.96 - double the estimated value. If you can rent the additional 10,000 power for less than $2 worth of DEC, it may be worth advancing to the Silver League for EoS !
Here's some information that I've found on Splintercards.com that helps understand the math behind end of season rewards.
If you're in Bronze you're probably noticing that you receive A LOT of potions for both daily and end of season loot chests. As you can see, even the highest tier of Bronze only has a 30% drop rate for rewards cards and a 35% chance for both credits or potions - percentages that only get worse the lower tier bronze you are. For Silver III and above, there is a 50% chance to reveal a rewards card.
Here's another table from Splintercards.com that shows the % drop rate for each reward card type, as well as esitamted values of chests from all leagues.
Bronze I
A few important drop rates to be aware of is that in Bronze I you have a 0.24% chance to pull a Legendary card, whereas in Silver III you have a 0.39% of revealing one - with three more chances with the extra chests.
Silver III
Although we can look at the math all day and try to decide if it financially makes sense to advance for End of Season, we all know that having the chance to reveal a gold-foil Harklaw from the reward chest is worth way more than a few DEC. Sometimes FOMO overrides the math, and sometimes it pays off.