If a couple shows up at the sellers' door unexpectedly to see the home, what should the sellers do?

The sellers should welcome to couple in a more polite and courteous way, that will make them feel welcome and to be interested into looking at the home. It is also best the sellers will show them around the house in a more detailed and honest manner in order to make them think and to have information that would be of suitable to their taste and where it could also engage them into buying and to be interested with the house that has been brought by the market. It is also likely that the sellers should offer the price of the house in a more detailed manner so that they will know what's the cause of why the house is less or more expensive than of other houses that they have seen or looking at.