Real airpods but fake box?

So i recently bought a pair of airpods gen3 off of fb, when checking for authenticity the airpods themselves appear to be legit, serial numbers on airpod and airpods case match up with apple coverage check, the center light is not a hole, all functionality work such as ear detection single, double and triple press work, can change name, basically it does everything the real things do but when it comes to the box it gets strange. First the under side of the top box seems cheap, the part where the airpods sit in is plastic instead of cardboard & the font in the manual seem cheap. The serial numbers from the case also match with the box if anyone has an idea please respond to this!