The quality of being easy to sell or of being wanted by buyers.
Salability is a good thing because it means people want to buy something.
Examples:
The salability of the product is very high.
The salability of the house is low because it's in a bad area.
The salability of the car is important to the seller.
The salability of candy is very high on Halloween.
The salability of water is very high in the desert.
The salability of toys is very high at Christmas.