Sebastian Marquez, 28, and his wife , Julia Marquez, 26, have never held jobs that pay over six figures, yet their combined net worth is just over $1 million. That's largely due to cryptocurrency investments in bitcoin and ethereum worth about $400,000 in U.S. dollars as of Sept. 30, according to documents reviewed by CNBC Make It. The couple is based in Strathroy, Ontario. However, "looking back at it, I most likely wouldn't have made that investment," Sebastian says, citing the volatile

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