Yes, you can sell your plugin on WPBay even if it is already available on other platforms such as WordPress.org or CodeCanyon, provided you hold the necessary rights to distribute the product and comply with the licensing terms of those platforms.

If your plugin is listed on WordPress.org, you may offer a paid version on WPBay with additional features, services, or support. This is a common model often referred to as “freemium.” In this case, the free version remains publicly available through WordPress.org, while the premium version is offered through WPBay with a separate purchase and license.

When listing a premium version of a WordPress.org plugin on WPBay, you should ensure that:

• The code you are selling includes additional functionality not found in the free version.
• Licensing is clearly stated and respects the terms of the original GPL license.
• The product name, branding, and description clearly distinguish between the free and paid versions.

If your plugin is sold on CodeCanyon (or similar marketplaces), you may list the same product on WPBay if you are not bound by an exclusivity agreement. Authors who have signed up for exclusive author status on CodeCanyon agree to sell their items only through Envato marketplaces. If you are an exclusive author there, you must switch to a non-exclusive status in order to list your product on WPBay or any other marketplace.

Before submitting your product to WPBay, review the licensing terms and agreements from any other platforms where your product is available. You must also ensure that all third-party assets bundled with your plugin are properly licensed for commercial redistribution.

In all cases, WPBay requires that the product submitted is complete, functional, and accompanied by all required documentation and licensing files. Sellers are also expected to maintain the product, respond to support requests, and deliver updates in line with platform standards.

If you are unsure about your rights to distribute a specific product or version, consult the terms of the original platform or contact WPBay support for guidance.