Build Buyback Widget/Plugin for WordPress

Need a plugin/widget with the following functionality.

Can buyback products from the customer by offering quotes
– This includes smartphones, smartwatches, tablets, laptops, etc.

Payment functionality in the form of PayPal, Venmo, Zelle, Cashapp

Inventory tracking on the admin side

Automatically creates shipping labels using EasyPost

Able to set pricing for products on the backend