There is plenty of inventory in all areas right now, so if someone pays “too much” for a property, with all of the listings and other info available to them on the internet, they really have no one to blame but themselves.
If you don’t get to see the inside of a property, though, it’s hard to say that someone is paying too much. You could have two houses in Carmel Valley that are the same floorplan, with similar views and similar lots, and one may sell for 10-15-20% more than the other, due to upgrades and rear yard improvements. One house may have no upgrades and minimal yard improvements, and the other has 200K in interior upgrades and pool/landscaping/hardscaping.