Source: recent offers and friends who recently got offers
e.g. Amazon was giving out SDE II (google L4 equivlant) @ 400k (first year no RSU but cash bonus paid out monthly) about 2 months ago.
re L3 level, if you have a master's or 1+ yr exp, while you're still at the entry level, you are considered "industrial hire" and 300 is very attainable
in my current company for new hires (again justed to google's leveling) we have L5 550+ and L6 650+ (200~300 cash + RSU , not pre-IPO bs)
In my earlier years I used to doubt those "ridiculous" numbers until I simply asked for more. There are plenty of companies out there, many medium-big sized non-FAANG companies pay just as well.
It's not "easy" to achieve this, but it might be possible. One doesn't just wake up and decide to go work at a FAANG and get a >90% percentile salary from them for the level.
I started my career in small companies and startups and it took me a long time to understand how TC works. Both in tech and finance base salaries are typically around 200 or less, but total compensations factoring in both bonuses and RSUs brings the amount of money you bring in each year much higher.
It's gotten much better in recent years with levels.fyi and the like helping more people to see this, but I found that a few years back if you didn't go to an elite school you likely didn't have someone explain to you how comp works.
If you want to make > 250k you absolutely can, and it doesn't mean selling your soul. Don't convince yourself that these TC levels are myths.
Though I do suspect we'll see dotcom level changes in comp soon.
Source: Nearly everyone I came up with as a programmer is in the 250+ range, and not just at FAANG. Check out https://levels.fyi
In my last job search which wasn't too long ago, I got several offers and not a single one was below $400k.