diff --git a/webapp/controller/OutAppPlanetController.class.php b/webapp/controller/OutAppPlanetController.class.php
index 949e14c2..914053a1 100644
--- a/webapp/controller/OutAppPlanetController.class.php
+++ b/webapp/controller/OutAppPlanetController.class.php
@@ -34,7 +34,7 @@ class OutAppPlanetController extends BaseController {
         $ids = array(
             '280001'
         );
-        $price = BlockChainService::formatCurrencyEx(1, $decimals);
+        $price = BlockChainService::formatCurrencyEx(1 * count($ids), $decimals);
         $rspObj = BlockChainService::beNftMallTransBuyPlanet(
             Transaction::BUY_OUTAPP_PLANET_ACTION_TYPE,
             $address,