dicker|dickered|dickering

他们在市场里为了几块钱讨价还价了半天。

They ___dickered over a few dollars at the market for hours.

别犹豫了，赶紧决定买哪件衣服吧！

Stop ___dickering and just pick a dress to buy!

他们在市场上为几块钱的差价讨价还价了半天。

They spent half an hour ___dickering over a few dollars at the market.