There should be better way to manage products with Expiry date, MRP, price with the help of batch number or through purchase invoice

Like in 2 senario:

1st: I bought Godrej No. 1 Soap MRP 140 at price of 120 so now I will sell it more than 120 like Rs. 130 and 1 box in quantity like 36 packs and next day I bought the same Godrej No 1 Soap MRP 140 but now the price is 119 per unit and now I am selling it at 129 so I am asking that Shoopy must handle these things one by one batch like once the first 120rs sold out then list the newer shipement for sale at lower prices than earlier. this feature should be handled by Manufacturing date like the older one must sell first and then the newer stocks, or Shoppy provide us multiple choice for creating rules for this feature