Requirements: College degree, medical degree, residency, fellowship, licensing
Time Investment: 11-18 years
Cost Investment: $200,000+
Even if you're frugal and go to a school in a state where you reside, becoming a doctor will cost you upwards of $19k per year, or $76k by the time you graduate. But if you're serious about this career path, that's just the beginning.
A public medical school (in, again, a state where you're a resident) charges an average $28,365 a year, which means your MD will wind up costing at least $113,460. Then you need to complete a residency for 3-7 years -- where you're definitely not earning a doctor's salary -- and possibly a specialty fellowship after that.
Going for your license can easily drain another $500-$1,000, but then, well into your 30s, you're done! Here's Gerberg's advice on cutting some costs: "Sometimes, if there’s a place without a lot of doctors, they might sponsor you. Like New Mexico. They’re dealing with a shortage right now."