Mr. Gardiner finally sends word that the two lovers have been found. They are not yet married, but they will be. They only ask for a small yearly sum of money.
Mr. Bennet and Elizabeth discuss the fact that somebody else, probably Mr. Gardiner, must have paid a great deal of money to convince Mr. Wickham to marry Lydia because, otherwise, they wouldn't be asking for such a small annual sum.
Mr. Bennet believes that a payment of 10,000 pounds (a ton of money) was probably required to make Mr. Wickham to marry Lydia.
Elizabeth, knowing Mr. Wickham has not a penny to his name and that debts must also have been settled, realizes the generosity of her uncle.
Mrs. Bennet is delighted at the news that her daughter will soon be married. She selfishly thinks it perfectly right for Mr. Gardiner to pay to arrange the marriage. After all, he has money and they don't.