I was 12 or 13. Ordered the bulbs from the back of a comic book. I didn't lose a plant, and had them a decade later when mold destroyed my substrate terrarium taking every plant it had taken 15 years to find and grow. Now you know why I advise against growing in a substrate terrarium. It took FOREVER back then to find growers and arrange trades. I had 100 species which back then was considered a spectacular collection. I lost everything within 3 days. It took me another 20 years before I had heart to even think of trying again. Within a year of restarting, I had three times as many plants as I originally had!