For any serious person trying to develop a little bit beyond hobby projects: Think about an hourly rate of $80/hour for yourself. If you have to spend an hour trying to fiddle with subpar shady parts, you've already paid for the shipping 8 times over.
Also, it is painful to wait for these packages from China. Digikey ships same day and its at your door step in the morning (I overnight it) and if you use $7, it is usually 2-3 days.
Plus, you're supporting legit businesses and not the shenzhen market.
I can understand total hobbyist who cannot afford $7 shipping often. But even then, you can bundle all your parts and order once.
Any engineer who earns a salary can afford $7 shipping. If you're a business, there is absolutely no excuse to penny pinch here. You're losing money by using unreliable parts, if not now, at some point in the future.