While Out of the Sandbox themes don't provide any built-in features, Shopify offers different options for merchants who are looking to sell products wholesale, such as the use of discount codes, third-party Shopify apps, and setting up a separate wholesale shop.
For more information on these options and other helpful information, check out Shopify's wholesale documentation.
Adding third-party apps can come at a cost, however, and we are unable to guarantee that the apps will integrate with Out of the Sandbox themes. Any conflicts with the added app and your theme would need to be resolved by the app’s developers.