Dictionary / Vocabulary / 大盤振る舞い
おおばんぶるまい · also おおばんふるまい
lavish feast; splendid banquet; corporate largess; lavish hospitality
Also written 大盤振舞、大盤振舞い、大盤ぶるまい
単品合計価格５万円以上入って、福袋特価・税込み２万５千円とは、大盤振る舞いだね。
A mystery bag that's priced at 25000 yen but contains items individually priced at over 50000 yen seems like such a steal.