On va le vendre aux enchères.
aw vahl vah-droh zah-SHAIR. Click below to hear this.*
They’re going to sell it at auction.
This sentence is rather non-specific, don’t you think? To begin with, who is on? We, they, you, people, someone? On never tells. And what is this unnamed entity selling? All we know is that the item is a noun of the masculine gender; so it could be a horse (le cheval ), a tractor (le tracteur ), or a rare postage stamp (le timbre-poste), but not a house (la maison), a car (la voiture), or a gold coin (la pièce en or).
In any case, cher (feminine chère) means expensive. And the way an auction works is that the item gets more and more expensive as people bid (enchérir) on it. And when one person places a higher bid than someone else, that’s called surenchérir, to bid above.
If you’re the seller, that’s great. If you’re the one who wanted to buy it–well, sorry.
*Some mobile phones, such as Blackberries, won’t display the audio player. If no player appears, here’s an alternative link to the audio file: