Stable income: Somewhat stable

Rare toy flipping can be a moderately stable monthly income source for most people who try it. Based on online sources and my own experience, some individuals can consistently earn profits, but there can be fluctuations in income due to market demand and availability of rare toys. If your best friend quit their job to do this full-time, I would say, 'That's a risk.' I'd rate it a 3 out of 5 because while there is a decent baseline of income potential, it may not be as stable as a traditional job paycheck.