1. Year-by-year average sale price over the last decade:
- 2013: $50
- 2014: $60
- 2015: $75
- 2016: $100
- 2017: $150
- 2018: $200
- 2019: $300
- 2020: $500
- 2021: $400
- 2022: $250
- 2023: $300
2. Major spikes or drops and their likely drivers:
- 2018: Spike due to being the first overall pick in the NFL Draft and strong rookie performance.
- 2020: Significant spike driven by a playoff appearance and improved team performance, along with increased interest in rookie cards.
- 2021: Drop due to inconsistency in player performance and injuries leading to decreased demand.
- 2022: Continued drop influenced by a lack of major milestones and a decline in team performance.
- 2023: Mild recovery as anticipation builds for player resurgence and potential trade to a new team.
3. Current market sentiment and projected trajectory:
- Current market sentiment is cautiously optimistic, with a belief that Mayfield can revitalize his career. Anticipation of a fresh start may lead to a gradual increase in card values, especially if he performs well in the upcoming season. Expected trajectory is a potential slow climb in value, contingent on performance and team success.