For those in the US who can afford to put away money, the most common retirement plan, is making a median wage (so somewhere around $55k), contributing up to the company match of probably 6%, using pre tax dollars, putting it into index funds, and relying on a 4% drawdown rate.

If a 25 year old did this, and wanted to retire at 67, that $275/month contribution would get them a nest egg of $760k, which would be 30,400/year, with no room for safety with market fluctuations.