Cannot get special price

Question

I have the following problem:

I want to get the final price programatically but it always displays 0

I tried with :

$product->getSpecialPrice();

$product->getPriceInfo()->getPrice("final_price")->getValue();

both displays 0

On the other hand $product->getPrice() displays the normal regular price correctly

Is there an other way to get the special price?

I get the products like this:

$collection = $block->getResourceModel('catalog/product_collection')
    ->addAttributeToFilter( 'sku', array('in' => $alle_skus) )
    ->addAttributeToSelect('name')
    ->addAttributeToSelect('thumbnail')
    ->addMinimalPrice()
    ->addFinalPrice()
    ->addTaxPercents()
    ->load();

Answer 1

You can use \Magento\Catalog\Model\ProductRepository to get Special Price.

To get the special price you can do it a couple of ways, this one being by product ID:

/** @var \Magento\Catalog\Model\ProductRepository $productRepository */
$this->_productRepository = $productRepository;

$product = $this->_productRepository->getById($id); <-- get the product by product ID
return $product->getSpecialPrice();

Or you can do by product SKU:

/** @var \Magento\Catalog\Model\ProductRepository $productRepository */
$this->_productRepository = $productRepository;

$product = $this->_productRepository->get($sku); <!-- get the product by product SKU
return $product->getSpecialPrice();

Answer 2

Get product special price

// get product regular price
$prd_regular_pice = $product->getPrice();

//get product final price
$prd_final_pice = $product->getFinalPrice(); // special price 

if($prd_regular_pice != $prd_final_pice) {
    $special price = $prd_final_pice;
} else {
    $special price = "No Special Price"
}
// get special price

echo  "Special Price  ".$special price;