I’m pretty sure I just saved a previously returned item from this fate. I bought something just yesterday from Amazon labeled as “new, but with a damaged box”. The item was heavily discounted, I think around 40% off. I could care less what the box looks like or if the individual parts aren’t wrapped perfectly if the item is in good working condition.
Considering that you very clearly understood the intent from context, it seems rather petty to point this out in an otherwise completely unrelated discussion.
The fact I "understood the intent" doesn't make it grate any less, whenever I set this phrase misused time after time by Americans. "I could care less" is literally the opposite of the sentiment you are trying to express.