Cash Out is a feature which allows you to settle an open bet for a value determined at the time of "cashing out". The settlement value offered will fluctuate depending upon the current likelihood of the bet winning, and could be greater or less than the initial stake placed on the bet.
How is a Cash Out calculated? Cash Outs are calculated just as a sportsbook would offer odds on any type of wager. The sportsbook will determine a price based on a variety of factors and offer this price to the bettor. With a Cash Out, the price is what the sportsbook determines as the current value of the wager.