Thanks for reaching out. We are glad to hear of your interest of the A20 headset.
We do not have access to information regarding trade in programs in all regions. I would suggest that you reach out to your local support team to see if there are any options available to you at this time. You can reach out to your local support team via clicking this link and selecting your region, this will redirect you to our website. Please scroll to the bottom of the website and there you will find a 'Contact Us' tab, this will provide you with all the relevant contact information for your country. An agent here will be able to provide you with the most accurate information.
However, if you are located in the USA or Canada, you may be interested in taking a look at this link.