Not sure how this works there is around 2.3 billio

Not sure how this works there is around 2.3 billion shares but mark and CO own A shares worth more. So if it sold for say 2 billion dollars are shares would not be 2 dollars they would be less and and those A shares would be worth more .I REALLY DONT KNOW HOW THAT WORKS Is it that way or are all the same price THIS HAS BEEN BUGGING ME FOR A LONG TIME BECAUSE A FEW CENTS MORE IS A LOT WHEN YOU HAVE MILLIONS ANYONE THANK YOU