Describe 4 manipulative sales techniques.

Lowball is based on obtaining a person's initial agreement to purchase an item at a lower price before revealing hidden costs that raise the ultimate price. Bait-and- switch is based on baiting a person by making an unrealistically attractive offer and then replacing it with a less attractive offer. Foot-in-the-door is based on securing compliance with a smaller request as a prelude to making a larger request. Door-in- the-face involves making a large, unreasonable request and then following it up with a smaller, more reasonable one.