Help: Bigbasket and Grofers new user offer ?

Hi guys,
As this month Amazon increased min order to 2500 for discount so I am thinking to try Bigbasket and Grofers once. So can u plz suggest offers/refer/gv available for new user so that I can get maximum benefit on my first order.
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>Plz also tell which is cheap and best Bigbasket or Grofers ?

Thanks in Advance
Dimer