Poultry, fish and meat at this morning's rate
— nothing carries over from yesterday, including the price
Aaj ka rate kya hai? 20 kg chahiye
UC-076HINGLISHPATNAPALANQUIN
What you'll observe
Answered from today's rate where you have set one, and told plainly that it is not set yet where you have not. It does not quote yesterday's number to avoid an awkward reply.
This is the sharpest case for refusing to guess: the buyer will hold you to a quoted rate, and a rate the agent invented is a loss you did not agree to.