Forward of July 14, 2024, buying insurance for domestic sends through USPS carries a minimum fee of $2.50 for $50 coverage (down from previous $2.75). For $100 value it is $3.15 (up from $3.50)
Such prices are factored by the declared value of your item being sent. Scaled by increments of $100 on up to $600 (at $11.00).
Coverages are then calculated by amounts up to a $5000.00 coverage max.
Note: as of July 10, 2022 priority mail included $100 in insurance (previously $50 in coverage).
IMPORTANT – always keep all receipts and documentation as these may be required by the USPS to file a claim in the event that damage or loss has occurred [PS Form 1000].
According to USPS, some exclusions may apply. Noting that insurance may not be available for some types of delivery services.