Another point to consider is that Media Mail items are not insured and are open to postal inspection. ... Risks: Slow delivery, risk of inspections and damaged materials, no insurance, no compensation for damages. Benefits: Dramatically cost-effective when compared to Priority Mail.
Can you add insurance to Media Mail?
How does Media Mail work? ... USPS will allow you to add additional services for Media Mail parcels. USPS Tracking is included for free and you can purchase insurance, COD, USPS Tracking and Signature Confirmation for your item through the Stamps.com software.
Can Media Mail be sealed?
Media Mail and Library Mail are not sealed against postal inspection. Regardless of physical closure, the mailing of articles at Media Mail or Library Mail prices constitutes consent by the mailer to postal inspection of the contents.