try to calc update costs in form

templates/upgrademailhosting.tpl

@@ -145,6 +145,7 @@
 															sliderTimeoutId = null;
 															recalctotals();
 														}, 250);
+														jQuery("#{$configoption.id}addprice").html({$configoption.selectedqty * 0.2})
 													}
 												});
 											</script>
@@ -164,7 +165,7 @@
 					<tr>
 						<td class="clearfix">
 							Zusätzliche Kosten: 
-							<div id="{$configoption}addprice">
+							<div id="{$configoption.id}addprice">
 							</div> {$ccurrency.code} / Monat
 						</td>
 					</tr>