To haggle, to wrangle, or to bargain.
To sell or offer goods from place to place, to peddle.
To promote or sell goods in an aggressive, showy manner.
Somebody who sells things in an aggressive or showy manner.
One who deceptively sells fraudulent products.
Somebody who writes advertisements for radio or television.
A peddler or hawker, who sells small items, either door-to-door, from a stall, or in the street.
To exchange (something) for (something else). (usually followed by with or for)
To transfer (memory contents) into a swap file.
To exchange (something or someone) for an unused (or less-used) equivalent.
Anything that is swapped out for another; an exchange.
A pre-prepared food item used in place of an unfinished food item in order to cut down the overall preparation time during filming.