Figures from this source
- EstimateSealed box secondary price, April 2024 (release+0m)¥7,000
- EstimateSealed box secondary price, May 2024 (release+1m)¥4,500
- EstimateSealed box secondary price, July 2024 (release+3m)¥4,000
- EstimateSealed box secondary price, October 2024 (release+6m)¥4,000
- EstimateSealed box secondary price, April 2025 (release+12m)¥6,500
- EstimateSealed box decline from 2026 peak, August 2026 peak 14,700円 -> September 2026 14,500円