The cost of hiring a hit man who doesn't use a gun, a knife or poison. Just kidding. It's actually the exact point that demand for something drops to zero. The demand chokes, so to speak.
The choke price represents the cost where people lose interest and/or can’t afford the item anymore. Obviously, retailers don’t want to reach the choke price. Check out your local grocer. Notice the out-of-season fruits and vegetables? These items creep up in price when they’re out of season. But they can't get too high. The grocery store has to avoid the choke price...or risk having a lot of rotten fruit to toss out.