The amount people pay in taxes do vary, which is why this "approximately 80%" savings for "approximately 5 years" system is probably only going to work for peop

The amount people pay in taxes do vary, which is why this "approximately 80%" savings for "approximately 5 years" system is probably only going to work for people who don't pay much if anything in taxes (ie. people with a pretty low income). Depending on your income, your tax rate, any unforeseen expenses, and your desired standard of living, you might need to work considerably longer.