US$4.99 once, with no subscription or automatic renewal. Unlocks full exports on up to three devices. Occasional internet access verifies the purchase. Save your license key before uninstalling to restore access. The tool exports metadata, not ebook contents, and currently supports Amazon.com only. Source changes or missing Amazon data can limit exports; completeness is labelled in the app. Contact mrlightsource@gmail.com within 30 days for a refund if the tool does not work for your library. A full refund revokes the paid unlock. Downloaded files remain yours. Statutory consumer rights are unaffected. Independent tool, not affiliated with Amazon.