code: public function reverseTransform($price)
      {
          $this->loadPriceMap();
  
          if (!$price) {
              return 0;
          }
  
          $price = intval($price * 100);
  
          if (!$price = array_search($price, $this->pricesMap)) {
              throw new \InvalidArgumentException(sprintf(
                  'Can\'t reverse transform price "%s". Not found price in prices map.',
                  $price
              ));
          }
  
          return $price / 100;
      }
docs: {@inheritDoc}