Monthly earnings: $100 - $5k

Income is influenced by factors such as the time invested per week, with beginners often working fewer hours and having limited inventory. Skill level and niche also play a role, as those with expertise in rare or high-demand books can command higher prices. Access to clients, traffic, or tools like online marketplaces can significantly impact sales. Earnings tend to scale over time as sellers build a reputation and expand their inventory. Online, people often report modest beginnings, with income growing as they gain experience and optimize their selling strategies.