True but when you are a small time reseller you can't afford DOA's and tell the client sorry sir we must first send back this unit for testing and 48 hours later you still don't have a replacement unit for him.
DOA on expensive items should be minimized by a required routine inspection on all units sold.
What is the carbon footprint of DOA units that have to be sent back.
I just can't afford it.
Um... The manufacturer pays. And believe me, they do minimize failures through QA testing. Minimal != none.