This add-on can be used to build functionality that requires special conditions (involving payments) in order to create/edit posts and custom post types. CRED Commerce covers most needed functionality out-of-the-box, however for extra fine-tuning or customization the following API hooks are available. The hooks are related to actions after a form is submitted and/or the purchase order changes status (completed/cancelled/refunded).
Download Toolset CRED Commerce 1.8.3 at WP Liga for Free with an active Membership. You will receive the exact same .zip file distributed by the original author, secure and 100% virus free.