diff --git a/includes/admin/class-wc-admin-post-types.php b/includes/admin/class-wc-admin-post-types.php
index 32253445884..fb81e543eca 100644
--- a/includes/admin/class-wc-admin-post-types.php
+++ b/includes/admin/class-wc-admin-post-types.php
@@ -959,11 +959,12 @@ class WC_Admin_Post_Types {
 				if ( 'sale' !== $price_type ) {
 					break;
 				}
+				$regular_price = $product->get_regular_price();
 				if ( $is_percentage ) {
 					$percent   = $price / 100;
-					$new_price = max( 0, $product->regular_price - ( round( $product->regular_price * $percent, wc_get_price_decimals() ) ) );
+					$new_price = max( 0, $regular_price - ( round( $regular_price * $percent, wc_get_price_decimals() ) ) );
 				} else {
-					$new_price = max( 0, $product->regular_price - $price );
+					$new_price = max( 0, $regular_price - $price );
 				}
 				break;
 
diff --git a/tests/unit-tests/admin/class-wc-tests-admin-post-types.php b/tests/unit-tests/admin/class-wc-tests-admin-post-types.php
index aa201ff2eaf..433b58c0a81 100644
--- a/tests/unit-tests/admin/class-wc-tests-admin-post-types.php
+++ b/tests/unit-tests/admin/class-wc-tests-admin-post-types.php
@@ -12,10 +12,27 @@
  */
 class WC_Tests_Admin_Post_Types extends WC_Unit_Test_Case {
 
+	/**
+	 * Get a new SUT (System Under Test) instance and configure the specified fake request data.
+	 *
+	 * @param array $request_data Fake request data to configure.
+	 * @return WC_Admin_Post_Types
+	 */
+	private function get_sut_with_request_data( $request_data ) {
+		$sut = $this
+			->getMockBuilder( WC_Admin_Post_Types::class )
+			->setMethods( array( 'request_data' ) )
+			->getMock();
+
+		$sut->method( 'request_data' )->willReturn( $request_data );
+
+		return $sut;
+	}
+
 	/**
 	 * Data for bulk_and_quick_edit_stock_status_for_variable_product test.
 	 *
-	 * @return string[][]
+	 * @return array
 	 */
 	public function data_provider_bulk_and_quick_edit_stock_status_for_variable_product() {
 		return array(
@@ -55,12 +72,7 @@ class WC_Tests_Admin_Post_Types extends WC_Unit_Test_Case {
 			'woocommerce_quick_edit_nonce' => wp_create_nonce( 'woocommerce_quick_edit_nonce' ),
 		);
 
-		$sut = $this
-			->getMockBuilder( WC_Admin_Post_Types::class )
-			->setMethods( array( 'request_data' ) )
-			->getMock();
-
-		$sut->method( 'request_data' )->willReturn( $request_data );
+		$sut = $this->get_sut_with_request_data( $request_data );
 
 		$sut->bulk_and_quick_edit_save_post( $product->get_id(), get_post( $product->get_id() ) );
 
@@ -69,4 +81,72 @@ class WC_Tests_Admin_Post_Types extends WC_Unit_Test_Case {
 			$this->assertEquals( $expected_new_stock_status, $child->get_stock_status() );
 		}
 	}
+
+	/**
+	 * Data for bulk_change_price test.
+	 *
+	 * @return array
+	 */
+	public function data_provider_bulk_change_price() {
+		$dataset = array();
+
+		// phpcs:ignore Squiz.PHP.CommentedOutCode.Found
+		// $type_of_price, $initial_price, $type_of_change, $change_amount, $expected_new_price
+		foreach ( array( 'regular', 'sale' ) as $type ) {
+			array_push( $dataset, array( $type, '10.33', '1', '5.339', 5.34 ) );
+			array_push( $dataset, array( $type, '10.33', '2', '5.3333', 15.66 ) );
+			array_push( $dataset, array( $type, '10.33', '2', '15.555%', 11.94 ) );
+			array_push( $dataset, array( $type, '10.33', '3', '5.339', 4.99 ) );
+			array_push( $dataset, array( $type, '10.33', '3', '15.555%', 8.72 ) );
+		}
+
+		array_push( $dataset, array( 'regular', '10.33', '4', '5.339', 10.33 ) );
+		array_push( $dataset, array( 'regular', '10.33', '4', '15.555%', 10.33 ) );
+
+		array_push( $dataset, array( 'sale', '10.33', '4', '5.339', 97.96 ) );
+		array_push( $dataset, array( 'sale', '10.33', '4', '15.555%', 87.23 ) );
+
+		return $dataset;
+	}
+
+	/**
+	 * @test
+	 * @testdox Prices should change appropriately when a price change is requested via bulk edit.
+	 * @dataProvider data_provider_bulk_change_price
+	 *
+	 * @param string $type_of_price 'regular' or 'sale'.
+	 * @param string $initial_price Initial value for the price.
+	 * @param string $type_of_change 1=absolute, 2=increase, 3=decrease, 4=regular minus (for sale price only).
+	 * @param string $change_amount The amount to change, ending with '%' if it's a percent.
+	 * @param string $expected_new_price Expected value of the product price after the save operation.
+	 */
+	public function bulk_change_price( $type_of_price, $initial_price, $type_of_change, $change_amount, $expected_new_price ) {
+		if ( 'regular' === $type_of_price ) {
+			$props = array( 'regular_price' => $initial_price );
+		} else {
+			$props = array(
+				'regular_price' => $initial_price * 10,
+				'sale_price'    => $initial_price,
+			);
+		}
+
+		$product = WC_Helper_Product::create_simple_product( true, $props );
+
+		$this->login_as_administrator();
+
+		$request_data = array(
+			'woocommerce_bulk_edit'         => '1',
+			'woocommerce_quick_edit_nonce'  => wp_create_nonce( 'woocommerce_quick_edit_nonce' ),
+			"change_{$type_of_price}_price" => $type_of_change,
+			"_{$type_of_price}_price"       => $change_amount,
+		);
+
+		$sut = $this->get_sut_with_request_data( $request_data );
+
+		$sut->bulk_and_quick_edit_save_post( $product->get_id(), get_post( $product->get_id() ) );
+
+		$product = wc_get_product( $product->get_id() );
+		$actual  = $product->{"get_{$type_of_price}_price"}();
+		$this->assertEquals( $expected_new_price, $actual );
+	}
 }