function getCost(element) {
  return parseInt(element.textContent.replace('$', ''));
}

function clickPage(age, income) {
  let inputs = document.getElementsByTagName('input');
  let header = document.getElementsByClassName('sectionHeader')[0];
  let inbar;

  inputs.age.value = age;
  inputs.income.value = income;

  document.getElementsByClassName('submit')[0].click();
  document.getElementsByClassName('planItem')[0].click();

  inbar = document.getElementsByClassName('inbar');

  header.click();

  return {
    gop: getCost(inbar[0]),
    obama: getCost(inbar[1])
  };
}

function main() {
  const container = [];
  for (let age=18; age<=80; age++) {
    for (let income = 10000; income<=100000; income+=1000) {
      let cost = clickPage(age, income);
      cost.age = age;
      cost.income = income;
      container.push(cost);
    }
  }
  return container;
}

main()