We've talked aboot this plenty suck as here
https://pinside.com/pinball/forum/topic/can-we-stop-using-new-out-of-box-and-huo-since-xxx
But I always thought it was the sellers inventing this term, but you can't blame them since it's a Pinside term in a drop down box. Along with other goodies like "Old in Box."
Jesus people, it's dumb.