Honestly, the capital required to generate $60k yearly after tax income on full-time lego sales in much, much higher than what you're estimated (if you estimated it at all, I'm not sure I see what you're counting on for purchasing sets and flipping them). Bare minimum of $500k to start if you want assured income and sales right away. I don't think $1M is too much, actually, for this to work out after all your fees and with selling prices that will generate consistent sales. At those investment levels, there are so many other options, including the good-old stock market that can be structured to generate the 5-15% return you'll be looking for, and with considerably less work and hassle. There's some big-time sellers here, and very, very few that make it their only source of income. For most of us, this is part-time, hobby-class level of investment. I shudder to think if I had to turn this into the sole source of income for my family. I'd find a hundred other things to do before trying to eke a full time living out of Lego reselling.