diff --git a/src/Integration/WPCOMProxy.php b/src/Integration/WPCOMProxy.php
index 5109bbd4b7..e20b1088ab 100644
--- a/src/Integration/WPCOMProxy.php
+++ b/src/Integration/WPCOMProxy.php
@@ -132,14 +132,14 @@ protected function register_object_types_filter( string $object_type ): void {
 		add_filter(
 			'woocommerce_rest_prepare_' . $object_type . '_object',
 			[ $this, 'filter_response_by_syncable_item' ],
-			1000, // Run this filter last to override any other response.
+			PHP_INT_MAX, // Run this filter last to override any other response.
 			3
 		);
 
 		add_filter(
 			'woocommerce_rest_prepare_' . $object_type . '_object',
 			[ $this, 'prepare_response' ],
-			10,
+			PHP_INT_MAX - 1,
 			3
 		);
 
@@ -338,6 +338,11 @@ public function prepare_response( WP_REST_Response $response, $item, WP_REST_Req
 			$attr = $this->attribute_manager->get_all_aggregated_values( $item );
 			// In case of empty array, convert to object to keep the response consistent.
 			$data['gla_attributes'] = (object) $attr;
+
+			// Force types and prevent user type change for fields as Google has strict type requirements.
+			$data['price']         = strval( $data['price'] ?? null );
+			$data['regular_price'] = strval( $data['regular_price'] ?? null );
+			$data['sale_price']    = strval( $data['sale_price'] ?? null );
 		}
 
 		foreach ( $data['meta_data'] ?? [] as $key => $meta ) {
diff --git a/tests/Unit/Integration/WPCOMProxyTest.php b/tests/Unit/Integration/WPCOMProxyTest.php
index 8af32bf0c2..403aa18ed5 100644
--- a/tests/Unit/Integration/WPCOMProxyTest.php
+++ b/tests/Unit/Integration/WPCOMProxyTest.php
@@ -498,4 +498,49 @@ public function test_get_empty_settings_for_shipping_zone_methods_as_object() {
 			$proxy->prepare_data( $data, $request )
 		);
 	}
+
+	public function test_product_types() {
+		add_filter( 'woocommerce_rest_prepare_product_object', [ $this, 'alter_product_price_types' ], 10, 3 );
+
+		$product          = ProductHelper::create_simple_product();
+		$product_variable = ProductHelper::create_variation_product();
+		$variation        = $product_variable->get_available_variations()[0];
+		$this->add_metadata( $product->get_id(), $this->get_test_metadata() );
+
+		$request = $this->do_request( '/wc/v3/products', 'GET', [ 'gla_syncable' => '1' ] );
+		$this->assertEquals( 'string', gettype( $request->get_data()[0]['price'] ) );
+		$this->assertEquals( 'string', gettype( $request->get_data()[0]['regular_price'] ) );
+		$this->assertEquals( 'string', gettype( $request->get_data()[0]['sale_price'] ) );
+
+		$request = $this->do_request( '/wc/v3/products/' . $product->get_id(), 'GET', [ 'gla_syncable' => '1' ] );
+		$this->assertEquals( 'string', gettype( $request->get_data()['price'] ) );
+		$this->assertEquals( 'string', gettype( $request->get_data()['regular_price'] ) );
+		$this->assertEquals( 'string', gettype( $request->get_data()['sale_price'] ) );
+
+		$request = $this->do_request( '/wc/v3/products/' . $product_variable->get_id() . '/variations', 'GET', [ 'gla_syncable' => '1' ] );
+		$this->assertEquals( 'string', gettype( $request->get_data()[0]['price'] ) );
+		$this->assertEquals( 'string', gettype( $request->get_data()[0]['regular_price'] ) );
+		$this->assertEquals( 'string', gettype( $request->get_data()[0]['sale_price'] ) );
+
+		$request = $this->do_request( '/wc/v3/products/' . $product_variable->get_id() . '/variations/' . $variation['variation_id'], 'GET', [ 'gla_syncable' => '1' ] );
+		$this->assertEquals( 'string', gettype( $request->get_data()['price'] ) );
+		$this->assertEquals( 'string', gettype( $request->get_data()['regular_price'] ) );
+		$this->assertEquals( 'string', gettype( $request->get_data()['sale_price'] ) );
+
+		// Doesn't apply if here is not 'gla_syncable'
+		$request = $this->do_request( '/wc/v3/products' );
+		$this->assertEquals( 'integer', gettype( $request->get_data()[0]['price'] ) );
+		$this->assertEquals( 'integer', gettype( $request->get_data()[0]['regular_price'] ) );
+		$this->assertEquals( 'integer', gettype( $request->get_data()[0]['sale_price'] ) );
+
+		remove_filter( 'woocommerce_rest_prepare_product_object', [ $this, 'alter_product_price_types' ] );
+	}
+
+	public function alter_product_price_types( $response ) {
+		$response->data['price']         = intval( $response->data['price'] );
+		$response->data['regular_price'] = intval( $response->data['regular_price'] );
+		$response->data['sale_price']    = intval( $response->data['sale_price'] );
+
+		return $response;
+	}
 }