I have had no issues whatsoever in the last two years. They really do have a little bit of everything including car parts and food.

Recently, I did order a laptop battery that was mis advertized as a 7800 MAh battery when it was a 7200 and amazon gave me a 30% refund to keep it! I never had to contact the 3rd party vendor, they are totally empowered to make the decisions.

I am a prime subscriber though and there are two distribution centers for amazon within an hour drive, so typically everything comes overnight instead of the 2 day shipping. If it's some off the wall crap from china, usually it takes the two days.