A more accurate term to describe the art of "Salesmanship".
As selling people things in our consumer
culture is about wants, not needs; appealing to ego and irrational desires, not demonstrating the
long-term value of owning the
product.
Salesmanipulationship is about deceit, coercion, and putting someone into a pressure-cooker so they are unable to think critically on what they are about to do.
A woman went into the shop to buy a $50
black dress, she
came out not only with the dress but with nearly $60 in accessories for it,
thanks to the clerk's Salesmanipulationship.