> For example if they tell you they do 0.5mm vias and you ask for 0.4mm vias and they ship you 0.5mm vias... who's in the wrong? If you’re ordering the $2 spec

> For example if they tell you they do 0.5mm vias and you ask for 0.4mm vias and they ship you 0.5mm vias... who's in the wrong? If you’re ordering the $2 special from JLC and they deliver a board that meets their specifications, you can’t really complain. Now if this was a $500 board house making random changes without communication, I’d be upset. At ultra-low price points, you take what’s offered and don’t expect any hand holding along the way.