How long do vanilla beans last?

B. asks through the contact form: How long do vanilla beans last? Do they go stale? What is the shelf life of vanilla beans?

According to Glenn at Amadeus Trading Company:…[non-vacuum packed] gourmet beans should last at least six months to a year (many times longer) if stored properly. Exraction-grade beans will last essentially indefinitely.

Vacuum packed beans will last for years.