change price text tip

@@ -7,7 +7,7 @@
     :transfer="true"
     @on-sure="onSure">
     <div class="change-price-modal">
-      <p class="modal-title">当前{{skc.sizeName}}码最低售价：¥{{skc.leastPrice}}</p>
+      <p class="modal-title">{{leastPriceMsg}}</p>
       <InputUfo type="number" placeholder="定价需以9结尾 例如1999" :maxlength="8" class="ipt-number" v-model="chgPrice">
         <span class="prepend" slot="prepend">￥</span>
       </InputUfo>
@@ -64,6 +64,14 @@ export default {
   },
   computed: {
     ...mapState(['fetchingChangePrice']),
+    leastPriceMsg() {
+      if (this.skc.leastPrice) {
+        return `当前${this.skc.sizeName}码最低售价：¥${this.skc.leastPrice}`;
+      } else if (this.skc.suggestMinPrice && this.skc.suggestMaxPrice) {
+        return `当前${this.skc.sizeName}码建议售价：¥${this.skc.suggestMinPrice} - ¥${this.skc.suggestMaxPrice}`;
+      }
+      return `当前${this.skc.sizeName}码最低售价：¥-`;
+    },
     postLoading() {
       return this.fetchingChangePrice || !this.calced;
     }