Day2-Bargaining in the market

A：Excuse me sir, how much is this souvenir?

B：Oh, that one there is $30

A：Jeez! That's a lot! Is that the best price you can give me?

B：I don't do bargaining. $25 is the cheapest I can go.

A：I see. Are you sure you can't go any lower?

B：Sorry, I can't, and you won't find a better price at this market.

A：How about two for 40？

B：No can do. But I can do three for 60.

A：Thanks, but no thanks.

B：Ok ok! Two for 40!

A：Deal! You take credit?

B：Cash only, sir.