edit

app/shop/lib/Sell.php

@@ -630,7 +630,7 @@ class Sell
                                 $price = $data['price'];
                             }
 
-                            if ($card_cash >= $price) {
+                            if ($card_cash > $price) {
                                 $data['card']['cash'] = $price;
                                 $data['price'] = 0;
                             } else {