A
the person who works in a shop
shop assistant/sales assistant
the place where you pay
checkout
the paper youy receive after paying
receipt
when the price is reduced from its original price
discount/sale
the person who works at the checkout
cashier
Verb - when you bring an item back to a shop you "____" the item.
return
Noun - the person in charge
boss/manager
the opposite of expensive
cheap
ventas/reajas
sales
pago
payment
comprador
shopper
ganga
bargain