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How do I find part number same LM358 with lowest cost

Other Parts Discussed in Thread: LM358, RC4558, LM321LV

Hi Expert.

I have design Amplifying a Piezo Speaker and Volume Control as bellow picture.

But I need lowest cost for this design.

So could you tell me What is Opamp (single power) I can replace LM358 with lowest cost.

Thank And Best Regard.