source: Shady Deals GIF by Dragon Ball Super | Gfycat

1. an agreement between two or more parties as to what each party will do for the other:

«…との/…する/…という» 契約, 取引契約, 売買契約; 取り決め «with/to do/that節»

e.g. the extraconstitutional bargain between the northern elite and the southern planters.

2. a thing bought or offered for sale more cheaply than is usual or expected:

格安品, 掘り出し物 (!特売そのものをさすsaleと違い, 特価品のこと; → sale)

e.g. the secondhand table was a real bargain

〖形容詞的に〗格安の, バーゲンの

e.g. as modifier : household and electrical goods at bargain prices.

verb no object

negotiate the terms and conditions of a transaction:

«人と/…について» 商談［交渉］する; 駆け引きをする «with/over, for»

e.g. he bargained with the city council to rent the stadium

e.g. (as noun bargaining) : many statutes are passed by political bargaining.

with object (bargain something away) part with something after negotiation but get little or nothing in return:

A〈物〉を安く売り渡す, (価値の低いものと引き換えに)手放す

e.g. his determination not to bargain away any of the province's existing economic powers.

(bargain for/bargain on) be prepared for; expect:

〖通例否定文, または比較構文で〗A〈事〉を前もって考慮に入れる, 予期する (!通例よくない事を想定する時に用いる)

e.g. I got more information than I'd bargained for

e.g. he didn't bargain on this storm.

be uncompromising in making a deal:

e.g. the company's prowess in driving a hard bargain has placed severe pressure on suppliers.

into the bargain (also North American in the bargain)

in addition to what was expected; moreover:

e.g. they've exceeded expectations and played some great football into the bargain

e.g. save yourself money and keep warm and cozy in the bargain.

carry out the promises one has made as part of an agreement:

e.g. they handed over hostages as a guarantee that they would keep their side of the bargain.

make a bargain; agree to a deal.

bargainer |ˈbärɡ(ə)nər| noun

Middle English: from Old French bargaine (noun), bargaignier (verb); probably of Germanic origin and related to German borgen ‘borrow’.