# Taxes & Game Economy

**BOB Arena implements fees to sustain marketing efforts, protect its total value locked, support development, and the core team:**

* 8% tax on any crystal bought (to be split among marketing spendings and the team)
* No taxes for arenas payouts
* 6% on every sold item through the marketplace (94% goes to the seller, 3% to the team, 3% directly in the total value locked for profits payout)

## Sustainability & Game Economy

**The real difference between BOB Arena and any other blockchain-related project lies in how the game supports itself.**

Since every hero has a certain percentage and probability of existence, it is possible, through statistics, to estimate the amount of ETH entering the game for a certain hero to release ETH payouts, without incurring insolvency in the economy or creating various pyramidal structures.

[To oversimplify for the sake of an example, if a hero has a 5% chance to exist, it is possible to determine that, on average, every 20 crystals opened will result in that hero being created. Then, considering the costs of a single crystal, it is possible to derive reasonable numbers for the payout of each hero. ](#user-content-fn-1)[^1]

But that's not all! 

* Right from its release, BOB Arena will have an open marketplace for players to sell their heroes and items. Every sell will directly benefit the game's economy through a 3% tax
* Players can attempt to upgrade their heroes; each level has a different upgrade cost and a percentage chance of being destroyed. 100% of the amount raised through upgrades benefits the game economy
* Any direct purchase of crystals or crystals+ also directly benefits (excluding taxes)  the game economy
* In order to start an arena with high level heroes, players need to first to increase the level of their characters (every concluded arena increase the character level by 1)

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