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For example, unlocking a single slot costs 300 gems and "generates" 10 gems / day. Time to pay for itself is the unlock cost divided by the daily income.For example, 10.0 is achieved by 24h / 1 day * 2200 exp / hr / 5271 exp / gem = 10.0 gem / day.The numbers below are based on the assumption that one is using the pit to upgrade 2* champions as food. I'm sure everyone can agree that over some long period of time the sparring pit will pay for itself - however - I feel like the value is very unintuitive, and before starting this analysis I wouldn't be able to tell you if it's a month, or a year. How many gems-worth of experience does the sparring pit produce? Lastly, to get a value for a single gem, we divide this number by the cost of an energy refill: 210843.75 / 40 = 5271.1 experience / gem without exp boost, or 10542.2 with.Farming 12-3 brutal gives 4325 exp / food without exp boost, or 12975 experience for 3 food characters combined.This number is achieved in the following manner: I am using 1 gem = 5271.1 exp without exp boost, twice that with. To make this analysis work we need to have a conversion from gems to experience. How much experience does one gem equal to? OP makes a good argument that unlocking sparring pit slots is worth it, but all the analysis is done in the context of comparing to exp boost (which most f2p players won't have most of the time), and it doesn't touch on the value of upgrading sparring pit slots.
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Inspired by the post from u/CluelessEcon, I decided to dig a little deeper on the value of the sparring pit to f2p / p2p players.
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