Figures from this source
- EstimateSealed box secondary price, December 2023 (release+0m)¥10,000
- EstimateSealed box secondary price, January 2024 (release+1m)¥7,000
- EstimateSealed box secondary price, March 2024 (release+3m)¥5,000
- EstimateSealed box secondary price, June 2024 (release+6m)¥3,500
- EstimateSealed box secondary price, December 2024 (release+12m)¥3,500
- EstimateSealed box decline from 2026 peak, April 2026 peak 21,500円 -> October 2026 17,800円