"écoutez bien" means listen carefully
You would be likely to say it when trying to get someone's attention regarding something that's going to be said or a music that's going to be played for example.
That's why it's used so much in the listening sections of French textbooks and why it's the name of this website:
www.evoutezbien.com which is dedicated to aural exercises.
écouter is to listen
Listen !
Ca coute combien ? means How much is it?
combien ca coute
How much/ what price
The spelling "coute" is French for cost.The possible English words are :coot - (slang) a bothersome old mancute - nice looking, adorable
How much/ what price
God listens to you is 'Dieu t'écoute' in French.
"Cela coute vingt ... (+ currency unit)."
Combien coute un cola?
"ça ne coûte pas cher" means "that doesn't cost a lot" in French.
Ca coute combien ? you are deciding whether or not to buy it. Ca fait combien ? you've bought more than one item, and want to know the total.
At all costs, at whatever cost
j'écoute des CD tous les jours