{adj. phr.} Selling for a special low price. * /Tomato soup that is usually sold for sixty cents a can is now on sale for fifty cents./ * /John and Mary couldn't sell all of the lemonade at twenty cents a cup so they have it on sale for ten cents a cup./
ON SALE
Meaning of ON SALE in English
Slang English vocab. Английский сленговый словарь. 2012