Profit & loss —
Item-wise profit
Purchases (stock added)
Wastage
Who sold what
Add stock asks for quantity and wholesale buy price — cost is re-averaged with what's left. Waste removes spoiled stock and books the loss. Count fixes the number after a physical check. Negative stock means sales were entered for stock that was never added.
Today's selling prices
Change what moved at the market, save once. Billing phones update within 10 seconds.