the act of selling.

a quantity sold.

opportunity to sell; demand

slow sale.

a special disposal of goods, as at reduced prices.

transfer of property for money or credit.

an auction. ?

for sale

offered to be sold; made available to purchasers.

on sale

able to be bought at reduced prices.

noun

auction , barter , business , buying , clearance , closeout , commerce , consuming , deal , demand , disposal , dumping , enterprise , marketing , negotiation , purchase , purchasing , reduction , selling , trade , transaction , unloading , vending , vendition , bargain , discount , exchange , handsel , market , rummage , spiel , transfer