ANET ET4 Pro was delivered pre-built, so I just needed to unpack and do some final assemblies to do first print right away. Printed manual was okay, but needed "Anet 3D Printer" Youtube Channel ("ET4 Pro Assembly Guide"), too. Kids helped and watched first print of example file same morning. Looks like everything was accurately pre-build: first print went pretty well. Awesome!
I was exactly the printer I have ordered and it works fine 8) And delivery in Europe was just three days.