Bitcoin prices on Halloween 2011: $3.27 2012: $11 2013: $201 2014: $337 2015: $312 2016: $699 2017: $6,369 2018: $6,332 2019: $9,172 2020: $13,537 2021: $61,837 2022: $20,624 2023: $34,494 2024: $72,250 2025: $109,000