By knowing the store policy, the haggler knows when to return to check the price of something they already bought.

弄清减价规律，砍家就知道什么时候去查证他们已购物品的价格。

youdao

Although it is true we have to look at the cost first, we must check the short term and long term economic return of that policy at the same time.

我们应当首先考虑成本是没有错的，但在此同时我们还应当考虑长期和短期内由于这一政策我们得到的回报。

youdao

Although it is true we have to look at the cost first, we must check the short term and long term economic return of that policy at the same time.

我们应当首先考虑成本是没有错的，但在此同时我们还应当考虑长期和短期内由于这一政策我们得到的回报。

youdao