Box looks very good except the fact that the gimmick is attached with Glossy transparent tape inside which slightly ruin the beauty of the box inside.The main problem is if the billets are not flat inside the box you will have issues.
One problem is sometime you can see part of the switched billet from side. Second one if the billets are not flat,the gimmick may not align properly with the base. If you don't mind asking them to attach paperclips 📎 on every billets, you can avoid these issues. I could not find the white protective cover on the glass as mentioned in the review by vanishtvlive on YouTube but it was not damaged.

The method will not surprise a veteran magician. BUT the unique trigger and quality of workmanship make this a must have for any serious mentalist using billets. Buy it, you will be glad you did.