Every seller gets told they can have two corners of the triangle — price, timing, convenience — but never all three. Investor competition gets you the best cash number. The open market reaches buyers who can pay even more. Most sellers are told to pick one path and live with the trade-off.
It isn't a magic trick. It's a deliberate sequence: price it to draw a crowd, build anticipation before anyone walks through the door, concentrate the showings into one window, and let buyers inspect up front so the winning offer has no reason to fall apart later.