If the quantity is large, just talk to the person who receives the goods at home.

Hint at him that if you don't give me a low price, I'll send another express.

Their consignees can set their own prices, so there is basically no need to sign with the company.

Of course, the amount is particularly large. If there are at least thirty or forty pieces a day, you can talk to the delivery man and sign a one-month contract.

So it depends on your measurement.