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Magento 2 returns regular price differently from special and final price. Expected result:

$product->getPrice(); // 89,95
$product->getPriceInfo()->getPrice('regular_price')->getAmount()->getValue(); // 89,95
$product->getSpecialPrice(); // 49,95
$product->getPriceInfo()->getPrice('special_price')->getAmount()->getValue(); // 49,95
$product->getFinalPrice(); // 49,95
$product->getPriceInfo()->getPrice('final_price')->getAmount()->getValue(); // 49,95

Given result:

$product->getPrice(); // 89,95
$product->getPriceInfo()->getPrice('regular_price')->getAmount()->getValue(); // 89,95
$product->getSpecialPrice(); // 49
$product->getPriceInfo()->getPrice('special_price')->getAmount()->getValue(); // 49
$product->getFinalPrice(); // 49
$product->getPriceInfo()->getPrice('final_price')->getAmount()->getValue(); // 49

Somehow the special and final prices get returned without decimals. I tried al kind of things with different helpers (like the taxhelper etc.), but no success. Why does Magento 2.3 keep returning the special price without decimals?

EDIT: And if this is normal behaviour, what would be the proper way to get the special and final price in my module without currency symbols etc. but including tax?

If you look following class:

vendor/magento/module-catalog/Pricing/Price/SpecialPrice.php

/**
 * Returns special price
 *
 * @return float
 */
public function getSpecialPrice()

 $specialPrice = $this->product->getSpecialPrice();
 if ($specialPrice !== null && $specialPrice !== false && !$this->isPercentageDiscount()) 
 $specialPrice = $this->priceCurrency->convertAndRound($specialPrice);
 
 return $specialPrice;

Actually following line format price:

$this->priceCurrency->convertAndRound($specialPrice)

Now go to the following class:

vendor/magento/module-directory/Model/PriceCurrency.php

And check the following code

/**
 * Round price with precision
 *
 * @param float $price
 * @param int $precision
 * @return float
 */
public function roundPrice($price, $precision = self::DEFAULT_PRECISION)

 return round($price, $precision);

Check documentation for round as well

Here is the sample example:

<?php

echo round(3.4); // 3
echo round(3.5); // 4
echo round(3.6); // 4
echo round(3.6, 0); // 4
echo round(1.95583, 2); // 1.96
echo round(1241757, -3); // 1242000
echo round(5.045, 2); // 5.05
echo round(5.055, 2); // 5.06