it depends. I paid 1k over invoice but with dealer I'd dealt with. The lowest quote I got was $700 over invoice. I tried to haggle with my dealer but they wouldn't bulge. Their reason, it's privately owned dealer with small volume. They are in business to make money.
Dealers can extract more money from you in many ways. Example,
Dealer Processing fee, my dealer only charges $55.
DMV Electronic Fee, $28 here. Well, I'm not gonna complaint for little fee.
No MACO fee. 3 years ago, I had to pay this fee from same dealer. Not sure what happens but I won't complain.
Also, those insurances ( extra maintenance, tire/wheel, paint, leather, etc ) are huge markup too. You can still negotiate on those if you want.
I've read many good price comes from VA dealers but with outrageous dealer processing fee. So read all the numbers before initial or sign the papers.
Don't worry about what other people pay. Just buy at the price you think it is fair.