$regularPrice = $product->getPriceInfo()->getPrice('regular_price')->getValue();
$specialPrice = $product->getPriceInfo()->getPrice('special_price')->getValue();

if ($product->getTypeId() == 'bundle') {
      $regularPrice = $product->getPriceInfo()->getPrice('regular_price')->getMinimalPrice()->getValue();
      $specialPrice = $product->getPriceInfo()->getPrice('final_price')->getMinimalPrice()->getValue();
}

if ($product->getTypeId() == 'configurable') {
      $basePrice = $product->getPriceInfo()->getPrice('regular_price');

      $regularPrice = $basePrice->getMinRegularAmount()->getValue();
      $specialPrice = $product->getFinalPrice();
}

if ($product->getTypeId() == 'grouped') {
      $usedProds = $product->getTypeInstance(true)->getAssociatedProducts($product);
      foreach ($usedProds as $child) {
          if ($child->getId() != $product->getId()) {
                $regularPrice += $child->getPrice();
                $specialPrice += $child->getFinalPrice();
          }
      }
}