When you have another offer on the table the best move for the recruiter is to make the serious offer then and there and try take care of the situation to avoid

When you have another offer on the table the best move for the recruiter is to make the serious offer then and there and try take care of the situation to avoid any further bidding. They want you for as cheap as they can get you but if someone else is willing to pay more then almost always they can afford it.