Figures from this source
- EstimateSealed box secondary price, June 2024 (release+0m)¥5,500
- EstimateSealed box secondary price, July 2024 (release+1m)¥4,000
- EstimateSealed box secondary price, September 2024 (release+3m)¥4,000
- EstimateSealed box secondary price, December 2024 (release+6m)¥4,000
- EstimateSealed box secondary price, June 2025 (release+12m)¥6,000
- EstimateSealed box decline from 2026 peak, April 2026 peak 12,000円 -> October 2026 11,000円