。。(だいきんはまえばらいです) 

Cash before delivery (CBD)

代金前払い (だいきんまえばらい) = Daikin Maebarai

Bill

請求書(せいきゅうしょ) = Seikyuu-sho 

Receipt

領収書(りょうしゅうしょ)=Ryoushuu-sho

Quotation or Estimate

見積書 (みつもりしょ) = Mitsumori-sho 

Competitive bids or bidding
Askig several companies for quotations and compare the rate.

相見積り (あいみつもり) = Aimitsumori
* This word is often used as あいみつ (Aimitsu) for short. 
Aimitsu is not so a pleasant thing for companies which are asked for, as the requesting person does that just to compare the prices in most of cases.

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