You can sell your videos via pay-per-view rental, one off purchase, monthly subscription, or any combination of the three.
You can set pay-per-view videos at a default price, on your Video On Demand Settings dashboard, or at different prices per video, in the Edit Video settings for each video.
Purchase prices will need to be set in each individual video that you turn the purchase option on. There is no default purchase option in the Default Video Settings.
Monthly subscriptions can only be set at one price, in your Video On Demand Settings dashboard.
You can also select to give it away for free, by turning off all three options.