For the first time, Bangladesh Bank has bought dollars from commercial banks in an auction. "He said, "If the dollar rate drops, it will create difficulties for expatriates and exporters. To prevent this, the central bank has decided to purchase dollars from banks. "Though most banks set the price around Tk 120 to sell dollars in the auction, the central bank has bought dollars at Tk 121.50. "In response to a question about why the central bank is offering a higher price than the commercial banks' expectations, the deputy managing director of a private bank said: "The market panicked because dollar price was falling.