1. Year-by-year average sale price over the last decade:
- 2013: $50
- 2014: $55
- 2015: $60
- 2016: $75
- 2017: $80
- 2018: $100
- 2019: $120
- 2020: $200
- 2021: $300
- 2022: $250
- 2023: $220
2. Major spikes or drops and their likely drivers:
- 2016: Spike due to the rise of basketball popularity in the global market and the emergence of star players like Stephen Curry.
- 2018: Continued growth driven by the NBA's increasing viewership and the hype around rookie classes.
- 2020: Significant spike driven by the pandemic-related surge in online trading and collecting, along with the heightened interest in basketball due to players like LeBron James and Zion Williamson.
- 2021: Peak prices attributed to the booming collectibles market and the NBA playoffs featuring high-profile matchups.
- 2022: Drop attributed to market corrections as collectors reassessed values and moved towards more stable investments.
- 2023: Continued decline influenced by economic factors and decreased speculative buying.
3. Current market sentiment and projected trajectory:
- Current sentiment is cautious, with collectors focusing on long-term value rather than short-term gains.
- Projected trajectory suggests stabilization in prices, with potential for gradual recovery as the market adjusts and new star players emerge.