For ordinary traders – who are not superstar traders – that number is way too low, in my opinion.
Realistic numbers
For each $1,000 of required monthly income (before taxes),
you will need somewhere between $25,000 and $150,000 in trading capital,
depending on the consistent, long-term-average return on investment (ROI) that you are able to achieve and maintain in your trading.
HERE you can read how these numbers were derived, and how they might apply to a trader with a typical, monthly budget requirement of $4,000.
Then, you can figure out how they might apply to you.