> For the complete documentation index, see [llms.txt](https://stackpro.gitbook.io/stackpro/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://stackpro.gitbook.io/stackpro/spro-token/stackpro-auto-liquidity-engine-sale.md).

# StackPro Auto-Liquidity Engine (SALE)

* [x] Market :droplet:Liquidity is of utmost importance and plays a vital role in allowing the buy & sell of $SPRO  tokens on PancakeSwap and TraderJoe.
* [x] In layman's terms, think of Liquidity as a big pool of money that is split 50/50 between $SPRO  tokens VS $BNB tokens and $SPRO tokens Vs $AVAX.
* [x] There is a conversion ratio that is set to the amount of $SPRO  you can get with BNB, for example:\
  **1 BNB = 300 SPRO.**\
  **1 AVAX = 2 SPRO**
* [x] When somebody buys SPRO, the price per SPRO will go up and the ratio above will also change at the same time to account for this. The same goes in the opposite direction for sales.
* [x] Liquidity allows for anybody to buy & sell their SPRO/BNB or SPRO/AVAX at anytime, however the less money/liquidity there is in the pool, the worse price you get so what our StackPro
* [x] Auto-Liquidity Engine (SALE) does, is add more liquidity to that pool by itself and therefore solving that issue.

#### **How SALE works**

* Every 24 hours our StackPro Auto-Liquidity Engine (SALE) will inject automatic liquidity into the market. On each buy or sell order there is a 4% tax fee that automatically gets stored into an Auto-LP wallet and built into our protocol's smart contract is the mechanism which smartly buy $SPRO from the 50% of BNB and AVAX and add liquidity to the StackPro liquidity pool. 
* The remaining 50% of BNB in the Auto-LP wallet will be used for the BNB/AVAX side of liquidity, therefore giving equal an 50/50 weighting of SPRO/BNB and SPRO/AVAX which will then be **automatically** added as new, additional liquidity into the market pair and raising the amount of liquidity in the pool.
* The SALE will do this **every 24 hours** by adding more and more liquidity to the pool which will allow $SPRO token holders to easily sell their tokens at any time with little to no market slippage. It will also aid in **maintaining protocol stability**