根据不同的参与人数，商品价格成阶梯分布，团的人越多，价格越便宜。多支付的金额在成团以后会退还
```javascript
WXAPI.pingtuanMultilevel(goodsId)
```
+ goodsId 商品id
```json
{
"code": 0,
"data": [
{
"goodsId": 1000060,
"id": 32,
"name": "满100人",
"number": 100,
"price": 888,
"userId": 2
},
{
"goodsId": 1000060,
"id": 33,
"name": "满200人",
"number": 200,
"price": 100,
"userId": 2
}
],
"msg": "success"
}
```
+ number 购买数量
+ price 拼团价格