function priceUpdate() {
  var varations = JSON.parse( $( '.variations_form' ).attr( 'data-product_variations' ) );

  var selectedMaterialName = $('.tpk-material-icons li.selected').data().material

  var pricePerMeter = varations.find(el => el.attributes['attribute_rodzaj-materialu'] === selectedMaterialName).display_price;

  var photoPrice = $( '#fotolia-photo-price' ).val();
  var $price = $( '.tpk-single-price-span' );
  var widthVal = $( '#single-product-img-dim-w' ).val();
  var heightVal = $( '#single-product-img-dim-h' ).val();

  // var area = Math.round( ( widthVal * heightVal ) / 100 ) / 100;
  var area = (widthVal * heightVal / 10000 );

  $( '#image-area' ).val( area );

  var newPrice = Math.round( ( area * pricePerMeter + parseFloat( photoPrice ) ) * 100 ) / 100;

  if(area < 1) {
    newPrice = pricePerMeter;
  }

  $price.html( newPrice + ' zł' );
}